--- _id: '12534' abstract: - lang: eng text: Brownian motion of a mobile impurity in a bath is affected by spin-orbit coupling (SOC). Here, we discuss a Caldeira-Leggett-type model that can be used to propose and interpret quantum simulators of this problem in cold Bose gases. First, we derive a master equation that describes the model and explore it in a one-dimensional (1D) setting. To validate the standard assumptions needed for our derivation, we analyze available experimental data without SOC; as a byproduct, this analysis suggests that the quench dynamics of the impurity is beyond the 1D Bose-polaron approach at temperatures currently accessible in a cold-atom laboratory—motion of the impurity is mainly driven by dissipation. For systems with SOC, we demonstrate that 1D spin-orbit coupling can be gauged out even in the presence of dissipation—the information about SOC is incorporated in the initial conditions. Observables sensitive to this information (such as spin densities) can be used to study formation of steady spin polarization domains during quench dynamics. acknowledgement: "We thank Rafael Barfknecht for help at the initial stages of this project; Fabian Brauneis for useful discussions; Miguel A. Garcia-March, Georgios Koutentakis, and Simeon Mistakidis\r\nfor comments on the paper. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON)." article_number: '013029' article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Alberto full_name: Cappellaro, Alberto id: 9d13b3cb-30a2-11eb-80dc-f772505e8660 last_name: Cappellaro orcid: 0000-0001-6110-2359 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Ghazaryan A, Cappellaro A, Lemeshko M, Volosniev A. Dissipative dynamics of an impurity with spin-orbit coupling. Physical Review Research. 2023;5(1). doi:10.1103/physrevresearch.5.013029 apa: Ghazaryan, A., Cappellaro, A., Lemeshko, M., & Volosniev, A. (2023). Dissipative dynamics of an impurity with spin-orbit coupling. Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.5.013029 chicago: Ghazaryan, Areg, Alberto Cappellaro, Mikhail Lemeshko, and Artem Volosniev. “Dissipative Dynamics of an Impurity with Spin-Orbit Coupling.” Physical Review Research. American Physical Society, 2023. https://doi.org/10.1103/physrevresearch.5.013029. ieee: A. Ghazaryan, A. Cappellaro, M. Lemeshko, and A. Volosniev, “Dissipative dynamics of an impurity with spin-orbit coupling,” Physical Review Research, vol. 5, no. 1. American Physical Society, 2023. ista: Ghazaryan A, Cappellaro A, Lemeshko M, Volosniev A. 2023. Dissipative dynamics of an impurity with spin-orbit coupling. Physical Review Research. 5(1), 013029. mla: Ghazaryan, Areg, et al. “Dissipative Dynamics of an Impurity with Spin-Orbit Coupling.” Physical Review Research, vol. 5, no. 1, 013029, American Physical Society, 2023, doi:10.1103/physrevresearch.5.013029. short: A. Ghazaryan, A. Cappellaro, M. Lemeshko, A. Volosniev, Physical Review Research 5 (2023). date_created: 2023-02-10T09:02:26Z date_published: 2023-01-20T00:00:00Z date_updated: 2023-02-20T07:02:00Z day: '20' ddc: - '530' department: - _id: MiLe doi: 10.1103/physrevresearch.5.013029 ec_funded: 1 file: - access_level: open_access checksum: 6068b62874c0099628a108bb9c5c6bd2 content_type: application/pdf creator: dernst date_created: 2023-02-13T10:38:10Z date_updated: 2023-02-13T10:38:10Z file_id: '12546' file_name: 2023_PhysicalReviewResearch_Ghazaryan.pdf file_size: 865150 relation: main_file success: 1 file_date_updated: 2023-02-13T10:38:10Z has_accepted_license: '1' intvolume: ' 5' issue: '1' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '01' oa: 1 oa_version: Published Version project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Dissipative dynamics of an impurity with spin-orbit coupling tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 5 year: '2023' ... --- _id: '13251' abstract: - lang: eng text: A rotating organic cation and a dynamically disordered soft inorganic cage are the hallmark features of organic-inorganic lead-halide perovskites. Understanding the interplay between these two subsystems is a challenging problem, but it is this coupling that is widely conjectured to be responsible for the unique behavior of photocarriers in these materials. In this work, we use the fact that the polarizability of the organic cation strongly depends on the ambient electrostatic environment to put the molecule forward as a sensitive probe of the local crystal fields inside the lattice cell. We measure the average polarizability of the C/N–H bond stretching mode by means of infrared spectroscopy, which allows us to deduce the character of the motion of the cation molecule, find the magnitude of the local crystal field, and place an estimate on the strength of the hydrogen bond between the hydrogen and halide atoms. Our results pave the way for understanding electric fields in lead-halide perovskites using infrared bond spectroscopy. acknowledgement: "We thank Bingqing Cheng and Hong-Zhou Ye for valuable discussions; Y.W.’s work at IST Austria was supported through ISTernship summer internship program funded by OeADGmbH; D.L. and Z.A. acknowledge support by IST Austria (ISTA); M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON).\r\nA.A.Z. and O.M.B. acknowledge support by KAUST." article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Yujing full_name: Wei, Yujing id: 0c5ff007-2600-11ee-b896-98bd8d663294 last_name: Wei orcid: 0000-0001-8913-9719 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Dusan full_name: Lorenc, Dusan id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87 last_name: Lorenc - first_name: Ayan A. full_name: Zhumekenov, Ayan A. last_name: Zhumekenov - first_name: Osman M. full_name: Bakr, Osman M. last_name: Bakr - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Zhanybek full_name: Alpichshev, Zhanybek id: 45E67A2A-F248-11E8-B48F-1D18A9856A87 last_name: Alpichshev orcid: 0000-0002-7183-5203 citation: ama: Wei Y, Volosniev A, Lorenc D, et al. Bond polarizability as a probe of local crystal fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry Letters. 2023;14(27):6309-6314. doi:10.1021/acs.jpclett.3c01158 apa: Wei, Y., Volosniev, A., Lorenc, D., Zhumekenov, A. A., Bakr, O. M., Lemeshko, M., & Alpichshev, Z. (2023). Bond polarizability as a probe of local crystal fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry Letters. American Chemical Society. https://doi.org/10.1021/acs.jpclett.3c01158 chicago: Wei, Yujing, Artem Volosniev, Dusan Lorenc, Ayan A. Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Bond Polarizability as a Probe of Local Crystal Fields in Hybrid Lead-Halide Perovskites.” The Journal of Physical Chemistry Letters. American Chemical Society, 2023. https://doi.org/10.1021/acs.jpclett.3c01158. ieee: Y. Wei et al., “Bond polarizability as a probe of local crystal fields in hybrid lead-halide perovskites,” The Journal of Physical Chemistry Letters, vol. 14, no. 27. American Chemical Society, pp. 6309–6314, 2023. ista: Wei Y, Volosniev A, Lorenc D, Zhumekenov AA, Bakr OM, Lemeshko M, Alpichshev Z. 2023. Bond polarizability as a probe of local crystal fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry Letters. 14(27), 6309–6314. mla: Wei, Yujing, et al. “Bond Polarizability as a Probe of Local Crystal Fields in Hybrid Lead-Halide Perovskites.” The Journal of Physical Chemistry Letters, vol. 14, no. 27, American Chemical Society, 2023, pp. 6309–14, doi:10.1021/acs.jpclett.3c01158. short: Y. Wei, A. Volosniev, D. Lorenc, A.A. Zhumekenov, O.M. Bakr, M. Lemeshko, Z. Alpichshev, The Journal of Physical Chemistry Letters 14 (2023) 6309–6314. date_created: 2023-07-18T11:13:17Z date_published: 2023-07-05T00:00:00Z date_updated: 2023-07-19T06:59:19Z day: '05' ddc: - '530' department: - _id: MiLe - _id: ZhAl doi: 10.1021/acs.jpclett.3c01158 ec_funded: 1 external_id: arxiv: - '2304.14198' isi: - '001022811500001' file: - access_level: open_access checksum: c0c040063f06a51b9c463adc504f1a23 content_type: application/pdf creator: dernst date_created: 2023-07-19T06:55:39Z date_updated: 2023-07-19T06:55:39Z file_id: '13253' file_name: 2023_JourPhysChemistry_Wei.pdf file_size: 2121252 relation: main_file success: 1 file_date_updated: 2023-07-19T06:55:39Z has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '27' keyword: - General Materials Science - Physical and Theoretical Chemistry language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: 6309-6314 project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: The Journal of Physical Chemistry Letters publication_identifier: eissn: - 1948-7185 publication_status: published publisher: American Chemical Society quality_controlled: '1' status: public title: Bond polarizability as a probe of local crystal fields in hybrid lead-halide perovskites tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2023' ... --- _id: '13276' abstract: - lang: eng text: We introduce a generic and accessible implementation of an exact diagonalization method for studying few-fermion models. Our aim is to provide a testbed for the newcomers to the field as well as a stepping stone for trying out novel optimizations and approximations. This userguide consists of a description of the algorithm, and several examples in varying orders of sophistication. In particular, we exemplify our routine using an effective-interaction approach that fixes the low-energy physics. We benchmark this approach against the existing data, and show that it is able to deliver state-of-the-art numerical results at a significantly reduced computational cost. acknowledgement: "We acknowledge fruitful discussions with Hans-Werner Hammer and thank Gerhard Zürn and\r\nPietro Massignan for sending us their data. We thank Fabian Brauneis for beta-testing the\r\nprovided code-package, and comments on the manuscript.\r\nL.R. is supported by FP7/ERC Consolidator Grant QSIMCORR, No.\r\n771891, and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under\r\nGermany’s Excellence Strategy –EXC–2111–390814868. A.G.V. acknowledges support\r\nby European Union’s Horizon 2020 research and innovation programme under the Marie\r\nSkłodowska-Curie Grant Agreement No. 754411." article_number: '12' article_processing_charge: No article_type: original author: - first_name: Lukas full_name: Rammelmüller, Lukas last_name: Rammelmüller - first_name: David full_name: Huber, David last_name: Huber - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Rammelmüller L, Huber D, Volosniev A. A modular implementation of an effective interaction approach for harmonically trapped fermions in 1D. SciPost Physics Codebases. 2023. doi:10.21468/scipostphyscodeb.12 apa: Rammelmüller, L., Huber, D., & Volosniev, A. (2023). A modular implementation of an effective interaction approach for harmonically trapped fermions in 1D. SciPost Physics Codebases. SciPost Foundation. https://doi.org/10.21468/scipostphyscodeb.12 chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “A Modular Implementation of an Effective Interaction Approach for Harmonically Trapped Fermions in 1D.” SciPost Physics Codebases. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphyscodeb.12. ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “A modular implementation of an effective interaction approach for harmonically trapped fermions in 1D,” SciPost Physics Codebases. SciPost Foundation, 2023. ista: Rammelmüller L, Huber D, Volosniev A. 2023. A modular implementation of an effective interaction approach for harmonically trapped fermions in 1D. SciPost Physics Codebases., 12. mla: Rammelmüller, Lukas, et al. “A Modular Implementation of an Effective Interaction Approach for Harmonically Trapped Fermions in 1D.” SciPost Physics Codebases, 12, SciPost Foundation, 2023, doi:10.21468/scipostphyscodeb.12. short: L. Rammelmüller, D. Huber, A. Volosniev, SciPost Physics Codebases (2023). date_created: 2023-07-24T10:47:15Z date_published: 2023-04-19T00:00:00Z date_updated: 2023-07-31T09:16:02Z day: '19' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphyscodeb.12 ec_funded: 1 external_id: arxiv: - '2202.04603' file: - access_level: open_access checksum: f583a70fe915d2208c803f5afb426daa content_type: application/pdf creator: dernst date_created: 2023-07-31T09:09:23Z date_updated: 2023-07-31T09:09:23Z file_id: '13330' file_name: 2023_SciPostPhysCodebase_Rammelmueller.pdf file_size: 551418 relation: main_file success: 1 file_date_updated: 2023-07-31T09:09:23Z has_accepted_license: '1' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: SciPost Physics Codebases publication_identifier: issn: - 2949-804X publication_status: published publisher: SciPost Foundation quality_controlled: '1' related_material: record: - id: '13275' relation: research_data status: public status: public title: A modular implementation of an effective interaction approach for harmonically trapped fermions in 1D tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2023' ... --- _id: '13275' abstract: - lang: eng text: We introduce a generic and accessible implementation of an exact diagonalization method for studying few-fermion models. Our aim is to provide a testbed for the newcomers to the field as well as a stepping stone for trying out novel optimizations and approximations. This userguide consists of a description of the algorithm, and several examples in varying orders of sophistication. In particular, we exemplify our routine using an effective-interaction approach that fixes the low-energy physics. We benchmark this approach against the existing data, and show that it is able to deliver state-of-the-art numerical results at a significantly reduced computational cost. article_processing_charge: No author: - first_name: Lukas full_name: Rammelmüller, Lukas last_name: Rammelmüller - first_name: David full_name: Huber, David last_name: Huber - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Rammelmüller L, Huber D, Volosniev A. Codebase release 1.0 for FermiFCI. 2023. doi:10.21468/scipostphyscodeb.12-r1.0 apa: Rammelmüller, L., Huber, D., & Volosniev, A. (2023). Codebase release 1.0 for FermiFCI. SciPost Foundation. https://doi.org/10.21468/scipostphyscodeb.12-r1.0 chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “Codebase Release 1.0 for FermiFCI.” SciPost Foundation, 2023. https://doi.org/10.21468/scipostphyscodeb.12-r1.0. ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “Codebase release 1.0 for FermiFCI.” SciPost Foundation, 2023. ista: Rammelmüller L, Huber D, Volosniev A. 2023. Codebase release 1.0 for FermiFCI, SciPost Foundation, 10.21468/scipostphyscodeb.12-r1.0. mla: Rammelmüller, Lukas, et al. Codebase Release 1.0 for FermiFCI. SciPost Foundation, 2023, doi:10.21468/scipostphyscodeb.12-r1.0. short: L. Rammelmüller, D. Huber, A. Volosniev, (2023). date_created: 2023-07-24T10:46:23Z date_published: 2023-04-19T00:00:00Z date_updated: 2023-07-31T09:16:02Z day: '19' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphyscodeb.12-r1.0 ec_funded: 1 main_file_link: - open_access: '1' url: https://doi.org/10.21468/SciPostPhysCodeb.12-r1.0 month: '04' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publisher: SciPost Foundation related_material: record: - id: '13276' relation: used_in_publication status: public status: public title: Codebase release 1.0 for FermiFCI type: research_data_reference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2023' ... --- _id: '12723' abstract: - lang: eng text: 'Lead halide perovskites enjoy a number of remarkable optoelectronic properties. To explain their origin, it is necessary to study how electromagnetic fields interact with these systems. We address this problem here by studying two classical quantities: Faraday rotation and the complex refractive index in a paradigmatic perovskite CH3NH3PbBr3 in a broad wavelength range. We find that the minimal coupling of electromagnetic fields to the k⋅p Hamiltonian is insufficient to describe the observed data even on the qualitative level. To amend this, we demonstrate that there exists a relevant atomic-level coupling between electromagnetic fields and the spin degree of freedom. This spin-electric coupling allows for quantitative description of a number of previous as well as present experimental data. In particular, we use it here to show that the Faraday effect in lead halide perovskites is dominated by the Zeeman splitting of the energy levels and has a substantial beyond-Becquerel contribution. Finally, we present general symmetry-based phenomenological arguments that in the low-energy limit our effective model includes all basis coupling terms to the electromagnetic field in the linear order.' article_number: '106901' article_processing_charge: No article_type: original author: - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Abhishek full_name: Shiva Kumar, Abhishek id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a last_name: Shiva Kumar - first_name: Dusan full_name: Lorenc, Dusan id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87 last_name: Lorenc - first_name: Younes full_name: Ashourishokri, Younes id: e32c111f-f6e0-11ea-865d-eb955baea334 last_name: Ashourishokri - first_name: Ayan A. full_name: Zhumekenov, Ayan A. last_name: Zhumekenov - first_name: Osman M. full_name: Bakr, Osman M. last_name: Bakr - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Zhanybek full_name: Alpichshev, Zhanybek id: 45E67A2A-F248-11E8-B48F-1D18A9856A87 last_name: Alpichshev orcid: 0000-0002-7183-5203 citation: ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Spin-electric coupling in lead halide perovskites. Physical Review Letters. 2023;130(10). doi:10.1103/physrevlett.130.106901 apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov, A. A., Bakr, O. M., … Alpichshev, Z. (2023). Spin-electric coupling in lead halide perovskites. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.130.106901 chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri, Ayan A. Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Spin-Electric Coupling in Lead Halide Perovskites.” Physical Review Letters. American Physical Society, 2023. https://doi.org/10.1103/physrevlett.130.106901. ieee: A. Volosniev et al., “Spin-electric coupling in lead halide perovskites,” Physical Review Letters, vol. 130, no. 10. American Physical Society, 2023. ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov AA, Bakr OM, Lemeshko M, Alpichshev Z. 2023. Spin-electric coupling in lead halide perovskites. Physical Review Letters. 130(10), 106901. mla: Volosniev, Artem, et al. “Spin-Electric Coupling in Lead Halide Perovskites.” Physical Review Letters, vol. 130, no. 10, 106901, American Physical Society, 2023, doi:10.1103/physrevlett.130.106901. short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A.A. Zhumekenov, O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review Letters 130 (2023). date_created: 2023-03-14T13:11:59Z date_published: 2023-03-10T00:00:00Z date_updated: 2023-08-01T13:39:04Z day: '10' department: - _id: GradSch - _id: ZhAl - _id: MiLe doi: 10.1103/physrevlett.130.106901 external_id: arxiv: - '2203.09443' isi: - '000982435900002' intvolume: ' 130' isi: 1 issue: '10' keyword: - General Physics and Astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2203.09443 month: '03' oa: 1 oa_version: Preprint publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Spin-electric coupling in lead halide perovskites type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 130 year: '2023' ... --- _id: '12724' abstract: - lang: eng text: 'We use general symmetry-based arguments to construct an effective model suitable for studying optical properties of lead halide perovskites. To build the model, we identify an atomic-level interaction between electromagnetic fields and the spin degree of freedom that should be added to a minimally coupled k⋅p Hamiltonian. As a first application, we study two basic optical characteristics of the material: the Verdet constant and the refractive index. Beyond these linear characteristics of the material, the model is suitable for calculating nonlinear effects such as the third-order optical susceptibility. Analysis of this quantity shows that the geometrical properties of the spin-electric term imply isotropic optical response of the system, and that optical anisotropy of lead halide perovskites is a manifestation of hopping of charge carriers. To illustrate this, we discuss third-harmonic generation.' article_number: '125201' article_processing_charge: No article_type: original author: - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Abhishek full_name: Shiva Kumar, Abhishek id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a last_name: Shiva Kumar - first_name: Dusan full_name: Lorenc, Dusan id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87 last_name: Lorenc - first_name: Younes full_name: Ashourishokri, Younes id: e32c111f-f6e0-11ea-865d-eb955baea334 last_name: Ashourishokri - first_name: Ayan full_name: Zhumekenov, Ayan last_name: Zhumekenov - first_name: Osman M. full_name: Bakr, Osman M. last_name: Bakr - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Zhanybek full_name: Alpichshev, Zhanybek id: 45E67A2A-F248-11E8-B48F-1D18A9856A87 last_name: Alpichshev orcid: 0000-0002-7183-5203 citation: ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Effective model for studying optical properties of lead halide perovskites. Physical Review B. 2023;107(12). doi:10.1103/physrevb.107.125201 apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov, A., Bakr, O. M., … Alpichshev, Z. (2023). Effective model for studying optical properties of lead halide perovskites. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.107.125201 chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri, Ayan Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Effective Model for Studying Optical Properties of Lead Halide Perovskites.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.107.125201. ieee: A. Volosniev et al., “Effective model for studying optical properties of lead halide perovskites,” Physical Review B, vol. 107, no. 12. American Physical Society, 2023. ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov A, Bakr OM, Lemeshko M, Alpichshev Z. 2023. Effective model for studying optical properties of lead halide perovskites. Physical Review B. 107(12), 125201. mla: Volosniev, Artem, et al. “Effective Model for Studying Optical Properties of Lead Halide Perovskites.” Physical Review B, vol. 107, no. 12, 125201, American Physical Society, 2023, doi:10.1103/physrevb.107.125201. short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A. Zhumekenov, O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review B 107 (2023). date_created: 2023-03-14T13:13:05Z date_published: 2023-03-15T00:00:00Z date_updated: 2023-08-01T13:39:47Z day: '15' department: - _id: GradSch - _id: ZhAl - _id: MiLe doi: 10.1103/physrevb.107.125201 external_id: arxiv: - '2204.04022' isi: - '000972602200006' intvolume: ' 107' isi: 1 issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2204.04022 month: '03' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Effective model for studying optical properties of lead halide perovskites type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '12788' abstract: - lang: eng text: We show that the simplest of existing molecules—closed-shell diatomics not interacting with one another—host topological charges when driven by periodic far-off-resonant laser pulses. A periodically kicked molecular rotor can be mapped onto a “crystalline” lattice in angular momentum space. This allows us to define quasimomenta and the band structure in the Floquet representation, by analogy with the Bloch waves of solid-state physics. Applying laser pulses spaced by 1/3 of the molecular rotational period creates a lattice with three atoms per unit cell with staggered hopping. Within the synthetic dimension of the laser strength, we discover Dirac cones with topological charges. These Dirac cones, topologically protected by reflection and time-reversal symmetry, are reminiscent of (although not equivalent to) that seen in graphene. They—and the corresponding edge states—are broadly tunable by adjusting the laser strength and can be observed in present-day experiments by measuring molecular alignment and populations of rotational levels. This paves the way to study controllable topological physics in gas-phase experiments with small molecules as well as to classify dynamical molecular states by their topological invariants. acknowledgement: M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). article_number: '103202' article_processing_charge: No article_type: original author: - first_name: Volker full_name: Karle, Volker id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425 last_name: Karle - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Karle V, Ghazaryan A, Lemeshko M. Topological charges of periodically kicked molecules. Physical Review Letters. 2023;130(10). doi:10.1103/PhysRevLett.130.103202 apa: Karle, V., Ghazaryan, A., & Lemeshko, M. (2023). Topological charges of periodically kicked molecules. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.130.103202 chicago: Karle, Volker, Areg Ghazaryan, and Mikhail Lemeshko. “Topological Charges of Periodically Kicked Molecules.” Physical Review Letters. American Physical Society, 2023. https://doi.org/10.1103/PhysRevLett.130.103202. ieee: V. Karle, A. Ghazaryan, and M. Lemeshko, “Topological charges of periodically kicked molecules,” Physical Review Letters, vol. 130, no. 10. American Physical Society, 2023. ista: Karle V, Ghazaryan A, Lemeshko M. 2023. Topological charges of periodically kicked molecules. Physical Review Letters. 130(10), 103202. mla: Karle, Volker, et al. “Topological Charges of Periodically Kicked Molecules.” Physical Review Letters, vol. 130, no. 10, 103202, American Physical Society, 2023, doi:10.1103/PhysRevLett.130.103202. short: V. Karle, A. Ghazaryan, M. Lemeshko, Physical Review Letters 130 (2023). date_created: 2023-04-02T22:01:10Z date_published: 2023-03-10T00:00:00Z date_updated: 2023-08-01T14:02:06Z day: '10' department: - _id: MiLe doi: 10.1103/PhysRevLett.130.103202 ec_funded: 1 external_id: arxiv: - '2206.07067' isi: - '000957635500003' intvolume: ' 130' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2206.07067 month: '03' oa: 1 oa_version: Preprint project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on the ISTA website relation: press_release url: https://ista.ac.at/en/news/topology-of-rotating-molecules/ scopus_import: '1' status: public title: Topological charges of periodically kicked molecules type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 130 year: '2023' ... --- _id: '12790' abstract: - lang: eng text: Motivated by the recent discoveries of superconductivity in bilayer and trilayer graphene, we theoretically investigate superconductivity and other interaction-driven phases in multilayer graphene stacks. To this end, we study the density of states of multilayer graphene with up to four layers at the single-particle band structure level in the presence of a transverse electric field. Among the considered structures, tetralayer graphene with rhombohedral (ABCA) stacking reaches the highest density of states. We study the phases that can arise in ABCA graphene by tuning the carrier density and transverse electric field. For a broad region of the tuning parameters, the presence of strong Coulomb repulsion leads to a spontaneous spin and valley symmetry breaking via Stoner transitions. Using a model that incorporates the spontaneous spin and valley polarization, we explore the Kohn-Luttinger mechanism for superconductivity driven by repulsive Coulomb interactions. We find that the strongest superconducting instability is in the p-wave channel, and occurs in proximity to the onset of Stoner transitions. Interestingly, we find a range of densities and transverse electric fields where superconductivity develops out of a strongly corrugated, singly connected Fermi surface in each valley, leading to a topologically nontrivial chiral p+ip superconducting state with an even number of copropagating chiral Majorana edge modes. Our work establishes ABCA-stacked tetralayer graphene as a promising platform for observing strongly correlated physics and topological superconductivity. acknowledgement: E.B. and T.H. were supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement No. 817799), by the Israel-USA Binational Science Foundation (BSF), and by a Research grant from Irving and Cherna Moskowitz. article_number: '104502' article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Tobias full_name: Holder, Tobias last_name: Holder - first_name: Erez full_name: Berg, Erez last_name: Berg - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Ghazaryan A, Holder T, Berg E, Serbyn M. Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. 2023;107(10). doi:10.1103/PhysRevB.107.104502 apa: Ghazaryan, A., Holder, T., Berg, E., & Serbyn, M. (2023). Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.107.104502 chicago: Ghazaryan, Areg, Tobias Holder, Erez Berg, and Maksym Serbyn. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.107.104502. ieee: A. Ghazaryan, T. Holder, E. Berg, and M. Serbyn, “Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity,” Physical Review B, vol. 107, no. 10. American Physical Society, 2023. ista: Ghazaryan A, Holder T, Berg E, Serbyn M. 2023. Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity. Physical Review B. 107(10), 104502. mla: Ghazaryan, Areg, et al. “Multilayer Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.” Physical Review B, vol. 107, no. 10, 104502, American Physical Society, 2023, doi:10.1103/PhysRevB.107.104502. short: A. Ghazaryan, T. Holder, E. Berg, M. Serbyn, Physical Review B 107 (2023). date_created: 2023-04-02T22:01:10Z date_published: 2023-03-01T00:00:00Z date_updated: 2023-08-01T13:59:29Z day: '01' department: - _id: MaSe - _id: MiLe doi: 10.1103/PhysRevB.107.104502 external_id: arxiv: - '2211.02492' isi: - '000945526400003' intvolume: ' 107' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2211.02492 month: '03' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on the ISTA website relation: press_release url: https://ista.ac.at/en/news/reaching-superconductivity-layer-by-layer/ scopus_import: '1' status: public title: Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '12831' abstract: - lang: eng text: The angulon, a quasiparticle formed by a quantum rotor dressed by the excitations of a many-body bath, can be used to describe an impurity rotating in a fluid or solid environment. Here, we propose a coherent state ansatz in the co-rotating frame, which provides a comprehensive theoretical description of angulons. We reveal the quasiparticle properties, such as energies, quasiparticle weights, and spectral functions, and show that our ansatz yields a persistent decrease in the impurity’s rotational constant due to many-body dressing, which is consistent with experimental observations. From our study, a picture of the angulon emerges as an effective spin interacting with a magnetic field that is self-consistently generated by the molecule’s rotation. Moreover, we discuss rotational spectroscopy, which focuses on the response of rotating molecules to a laser perturbation in the linear response regime. Importantly, we take into account initial-state interactions that have been neglected in prior studies and reveal their impact on the excitation spectrum. To examine the angulon instability regime, we use a single-excitation ansatz and obtain results consistent with experiments, in which a broadening of spectral lines is observed while phonon wings remain highly suppressed due to initial-state interactions. acknowledgement: We thank Ignacio Cirac, Christian Schmauder, and Henrik Stapelfeldt for their valuable discussions. We acknowledge support by the Max Planck Society and the Deutsche Forschungsgemeinschaft under Germany’s Excellence Strategy EXC 2181/1—390900948 (the Heidelberg STRUCTURES Excellence Cluster). M.L. acknowledges support from the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). T.S. is supported by the National Key Research and Development Program of China (Grant No. 2017YFA0718304) and the National Natural Science Foundation of China (Grant Nos. 11974363, 12135018, and 12047503). article_number: '134301' article_processing_charge: No article_type: original author: - first_name: Zhongda full_name: Zeng, Zhongda last_name: Zeng - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Tao full_name: Shi, Tao last_name: Shi - first_name: Richard full_name: Schmidt, Richard last_name: Schmidt citation: ama: Zeng Z, Yakaboylu E, Lemeshko M, Shi T, Schmidt R. Variational theory of angulons and their rotational spectroscopy. The Journal of Chemical Physics. 2023;158(13). doi:10.1063/5.0135893 apa: Zeng, Z., Yakaboylu, E., Lemeshko, M., Shi, T., & Schmidt, R. (2023). Variational theory of angulons and their rotational spectroscopy. The Journal of Chemical Physics. American Institute of Physics. https://doi.org/10.1063/5.0135893 chicago: Zeng, Zhongda, Enderalp Yakaboylu, Mikhail Lemeshko, Tao Shi, and Richard Schmidt. “Variational Theory of Angulons and Their Rotational Spectroscopy.” The Journal of Chemical Physics. American Institute of Physics, 2023. https://doi.org/10.1063/5.0135893. ieee: Z. Zeng, E. Yakaboylu, M. Lemeshko, T. Shi, and R. Schmidt, “Variational theory of angulons and their rotational spectroscopy,” The Journal of Chemical Physics, vol. 158, no. 13. American Institute of Physics, 2023. ista: Zeng Z, Yakaboylu E, Lemeshko M, Shi T, Schmidt R. 2023. Variational theory of angulons and their rotational spectroscopy. The Journal of Chemical Physics. 158(13), 134301. mla: Zeng, Zhongda, et al. “Variational Theory of Angulons and Their Rotational Spectroscopy.” The Journal of Chemical Physics, vol. 158, no. 13, 134301, American Institute of Physics, 2023, doi:10.1063/5.0135893. short: Z. Zeng, E. Yakaboylu, M. Lemeshko, T. Shi, R. Schmidt, The Journal of Chemical Physics 158 (2023). date_created: 2023-04-16T22:01:07Z date_published: 2023-04-07T00:00:00Z date_updated: 2023-08-01T14:08:47Z day: '07' ddc: - '530' department: - _id: MiLe doi: 10.1063/5.0135893 ec_funded: 1 external_id: arxiv: - '2211.08070' isi: - '000970038800001' file: - access_level: open_access checksum: 8d801babea4df48e08895c76571bb19e content_type: application/pdf creator: dernst date_created: 2023-04-17T07:28:38Z date_updated: 2023-04-17T07:28:38Z file_id: '12841' file_name: 2023_JourChemicalPhysics_Zeng.pdf file_size: 7388057 relation: main_file success: 1 file_date_updated: 2023-04-17T07:28:38Z has_accepted_license: '1' intvolume: ' 158' isi: 1 issue: '13' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: The Journal of Chemical Physics publication_identifier: eissn: - 1089-7690 publication_status: published publisher: American Institute of Physics quality_controlled: '1' scopus_import: '1' status: public title: Variational theory of angulons and their rotational spectroscopy tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 158 year: '2023' ... --- _id: '12914' abstract: - lang: eng text: We numerically study two methods of measuring tunneling times using a quantum clock. In the conventional method using the Larmor clock, we show that the Larmor tunneling time can be shorter for higher tunneling barriers. In the second method, we study the probability of a spin-flip of a particle when it is transmitted through a potential barrier including a spatially rotating field interacting with its spin. According to the adiabatic theorem, the probability depends on the velocity of the particle inside the barrier. It is numerically observed that the probability increases for higher barriers, which is consistent with the result obtained by the Larmor clock. By comparing outcomes for different initial spin states, we suggest that one of the main causes of the apparent decrease in the tunneling time can be the filtering effect occurring at the end of the barrier. acknowledgement: We thank W. H. Zurek, N. Sinitsyn, M. O. Scully, M. Arndt, and C. H. Marrows for helpful discussions. F.S. acknowledges support from the Los Alamos National Laboratory LDRD program under Project No. 20230049DR and the Center for Nonlinear Studies. F.S. also thanks the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant No. 754411 for support. W.G.U. thanks the Natural Science and Engineering Research Council of Canada, the Hagler Institute of Texas A&M University, the Helmholz Inst HZDR, Germany for support while this work was being done. article_number: '042216' article_processing_charge: No article_type: original author: - first_name: Fumika full_name: Suzuki, Fumika id: 650C99FC-1079-11EA-A3C0-73AE3DDC885E last_name: Suzuki orcid: 0000-0003-4982-5970 - first_name: William G. full_name: Unruh, William G. last_name: Unruh citation: ama: Suzuki F, Unruh WG. Numerical quantum clock simulations for measuring tunneling times. Physical Review A. 2023;107(4). doi:10.1103/PhysRevA.107.042216 apa: Suzuki, F., & Unruh, W. G. (2023). Numerical quantum clock simulations for measuring tunneling times. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.107.042216 chicago: Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations for Measuring Tunneling Times.” Physical Review A. American Physical Society, 2023. https://doi.org/10.1103/PhysRevA.107.042216. ieee: F. Suzuki and W. G. Unruh, “Numerical quantum clock simulations for measuring tunneling times,” Physical Review A, vol. 107, no. 4. American Physical Society, 2023. ista: Suzuki F, Unruh WG. 2023. Numerical quantum clock simulations for measuring tunneling times. Physical Review A. 107(4), 042216. mla: Suzuki, Fumika, and William G. Unruh. “Numerical Quantum Clock Simulations for Measuring Tunneling Times.” Physical Review A, vol. 107, no. 4, 042216, American Physical Society, 2023, doi:10.1103/PhysRevA.107.042216. short: F. Suzuki, W.G. Unruh, Physical Review A 107 (2023). date_created: 2023-05-07T22:01:03Z date_published: 2023-04-20T00:00:00Z date_updated: 2023-08-01T14:33:21Z day: '20' department: - _id: MiLe doi: 10.1103/PhysRevA.107.042216 ec_funded: 1 external_id: arxiv: - '2207.13130' isi: - '000975799300006' intvolume: ' 107' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2207.13130 month: '04' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Numerical quantum clock simulations for measuring tunneling times type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '13233' abstract: - lang: eng text: We study the impact of finite-range physics on the zero-range-model analysis of three-body recombination in ultracold atoms. We find that temperature dependence of the zero-range parameters can vary from one set of measurements to another as it may be driven by the distribution of error bars in the experiment, and not by the underlying three-body physics. To study finite-temperature effects in three-body recombination beyond the zero-range physics, we introduce and examine a finite-range model based upon a hyperspherical formalism. The systematic error discussed in this Letter may provide a significant contribution to the error bars of measured three-body parameters. acknowledgement: We thank Jan Arlt, Hans-Werner Hammer, and Karsten Riisager for useful discussions. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). article_number: L061304 article_processing_charge: No article_type: letter_note author: - first_name: Sofya full_name: Agafonova, Sofya id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80 last_name: Agafonova - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Agafonova S, Lemeshko M, Volosniev A. Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. 2023;107(6). doi:10.1103/PhysRevA.107.L061304 apa: Agafonova, S., Lemeshko, M., & Volosniev, A. (2023). Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.107.L061304 chicago: Agafonova, Sofya, Mikhail Lemeshko, and Artem Volosniev. “Finite-Range Bias in Fitting Three-Body Loss to the Zero-Range Model.” Physical Review A. American Physical Society, 2023. https://doi.org/10.1103/PhysRevA.107.L061304. ieee: S. Agafonova, M. Lemeshko, and A. Volosniev, “Finite-range bias in fitting three-body loss to the zero-range model,” Physical Review A, vol. 107, no. 6. American Physical Society, 2023. ista: Agafonova S, Lemeshko M, Volosniev A. 2023. Finite-range bias in fitting three-body loss to the zero-range model. Physical Review A. 107(6), L061304. mla: Agafonova, Sofya, et al. “Finite-Range Bias in Fitting Three-Body Loss to the Zero-Range Model.” Physical Review A, vol. 107, no. 6, L061304, American Physical Society, 2023, doi:10.1103/PhysRevA.107.L061304. short: S. Agafonova, M. Lemeshko, A. Volosniev, Physical Review A 107 (2023). date_created: 2023-07-16T22:01:10Z date_published: 2023-06-20T00:00:00Z date_updated: 2023-08-02T06:31:52Z day: '20' department: - _id: MiLe - _id: OnHo doi: 10.1103/PhysRevA.107.L061304 ec_funded: 1 external_id: arxiv: - '2302.01022' isi: - '001019748000005' intvolume: ' 107' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2302.01022 month: '06' oa: 1 oa_version: Preprint project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Finite-range bias in fitting three-body loss to the zero-range model type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 107 year: '2023' ... --- _id: '13966' abstract: - lang: eng text: We present a low-scaling diagrammatic Monte Carlo approach to molecular correlation energies. Using combinatorial graph theory to encode many-body Hugenholtz diagrams, we sample the Møller-Plesset (MPn) perturbation series, obtaining accurate correlation energies up to n=5, with quadratic scaling in the number of basis functions. Our technique reduces the computational complexity of the molecular many-fermion correlation problem, opening up the possibility of low-scaling, accurate stochastic computations for a wide class of many-body systems described by Hugenholtz diagrams. acknowledgement: We acknowledge stimulating discussions with Sergey Varganov, Artur Izmaylov, Jacek Kłos, Piotr Żuchowski, Dominika Zgid, Nikolay Prokof'ev, Boris Svistunov, Robert Parrish, and Andreas Heßelmann. G.B. and Q.P.H. acknowledge support from the Austrian Science Fund (FWF) under Projects No. M2641-N27 and No. M2751. M.L. acknowledges support by the FWF under Project No. P29902-N27, and by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). T.V.T. was supported by the NSF CAREER award No. PHY-2045681. This work is supported by the German Research Foundation (DFG) under Germany's Excellence Strategy EXC2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). The authors acknowledge support by the state of Baden-Württemberg through bwHPC. article_number: '045115' article_processing_charge: No article_type: original author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Quoc P full_name: Ho, Quoc P id: 3DD82E3C-F248-11E8-B48F-1D18A9856A87 last_name: Ho - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: T. V. full_name: Tscherbul, T. V. last_name: Tscherbul citation: ama: 'Bighin G, Ho QP, Lemeshko M, Tscherbul TV. Diagrammatic Monte Carlo for electronic correlation in molecules: High-order many-body perturbation theory with low scaling. Physical Review B. 2023;108(4). doi:10.1103/PhysRevB.108.045115' apa: 'Bighin, G., Ho, Q. P., Lemeshko, M., & Tscherbul, T. V. (2023). Diagrammatic Monte Carlo for electronic correlation in molecules: High-order many-body perturbation theory with low scaling. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.108.045115' chicago: 'Bighin, Giacomo, Quoc P Ho, Mikhail Lemeshko, and T. V. Tscherbul. “Diagrammatic Monte Carlo for Electronic Correlation in Molecules: High-Order Many-Body Perturbation Theory with Low Scaling.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.108.045115.' ieee: 'G. Bighin, Q. P. Ho, M. Lemeshko, and T. V. Tscherbul, “Diagrammatic Monte Carlo for electronic correlation in molecules: High-order many-body perturbation theory with low scaling,” Physical Review B, vol. 108, no. 4. American Physical Society, 2023.' ista: 'Bighin G, Ho QP, Lemeshko M, Tscherbul TV. 2023. Diagrammatic Monte Carlo for electronic correlation in molecules: High-order many-body perturbation theory with low scaling. Physical Review B. 108(4), 045115.' mla: 'Bighin, Giacomo, et al. “Diagrammatic Monte Carlo for Electronic Correlation in Molecules: High-Order Many-Body Perturbation Theory with Low Scaling.” Physical Review B, vol. 108, no. 4, 045115, American Physical Society, 2023, doi:10.1103/PhysRevB.108.045115.' short: G. Bighin, Q.P. Ho, M. Lemeshko, T.V. Tscherbul, Physical Review B 108 (2023). date_created: 2023-08-06T22:01:10Z date_published: 2023-07-15T00:00:00Z date_updated: 2023-08-07T08:41:29Z day: '15' department: - _id: MiLe - _id: TaHa doi: 10.1103/PhysRevB.108.045115 ec_funded: 1 external_id: arxiv: - '2203.12666' intvolume: ' 108' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2203.12666 month: '07' oa: 1 oa_version: Preprint project: - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities - _id: 26B96266-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02751 name: Algebro-Geometric Applications of Factorization Homology - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Diagrammatic Monte Carlo for electronic correlation in molecules: High-order many-body perturbation theory with low scaling' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 108 year: '2023' ... --- _id: '14320' abstract: - lang: eng text: The development of two-dimensional materials has resulted in a diverse range of novel, high-quality compounds with increasing complexity. A key requirement for a comprehensive quantitative theory is the accurate determination of these materials' band structure parameters. However, this task is challenging due to the intricate band structures and the indirect nature of experimental probes. In this work, we introduce a general framework to derive band structure parameters from experimental data using deep neural networks. We applied our method to the penetration field capacitance measurement of trilayer graphene, an effective probe of its density of states. First, we demonstrate that a trained deep network gives accurate predictions for the penetration field capacitance as a function of tight-binding parameters. Next, we use the fast and accurate predictions from the trained network to automatically determine tight-binding parameters directly from experimental data, with extracted parameters being in a good agreement with values in the literature. We conclude by discussing potential applications of our method to other materials and experimental techniques beyond penetration field capacitance. acknowledgement: A.F.Y. acknowledges primary support from the Department of Energy under award DE-SC0020043, and additional support from the Gordon and Betty Moore Foundation under award GBMF9471 for group operations. article_number: '125411' article_processing_charge: No article_type: original author: - first_name: Paul M full_name: Henderson, Paul M id: 13C09E74-18D9-11E9-8878-32CFE5697425 last_name: Henderson orcid: 0000-0002-5198-7445 - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Alexander A. full_name: Zibrov, Alexander A. last_name: Zibrov - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. Physical Review B. 2023;108(12). doi:10.1103/physrevb.108.125411' apa: 'Henderson, P. M., Ghazaryan, A., Zibrov, A. A., Young, A. F., & Serbyn, M. (2023). Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.108.125411' chicago: 'Henderson, Paul M, Areg Ghazaryan, Alexander A. Zibrov, Andrea F. Young, and Maksym Serbyn. “Deep Learning Extraction of Band Structure Parameters from Density of States: A Case Study on Trilayer Graphene.” Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.125411.' ieee: 'P. M. Henderson, A. Ghazaryan, A. A. Zibrov, A. F. Young, and M. Serbyn, “Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene,” Physical Review B, vol. 108, no. 12. American Physical Society, 2023.' ista: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. 2023. Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene. Physical Review B. 108(12), 125411.' mla: 'Henderson, Paul M., et al. “Deep Learning Extraction of Band Structure Parameters from Density of States: A Case Study on Trilayer Graphene.” Physical Review B, vol. 108, no. 12, 125411, American Physical Society, 2023, doi:10.1103/physrevb.108.125411.' short: P.M. Henderson, A. Ghazaryan, A.A. Zibrov, A.F. Young, M. Serbyn, Physical Review B 108 (2023). date_created: 2023-09-12T07:12:12Z date_published: 2023-09-15T00:00:00Z date_updated: 2023-09-20T09:38:24Z day: '15' department: - _id: MaSe - _id: ChLa - _id: MiLe doi: 10.1103/physrevb.108.125411 external_id: arxiv: - '2210.06310' intvolume: ' 108' issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2210.06310 month: '09' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Deep learning extraction of band structure parameters from density of states: A case study on trilayer graphene' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 108 year: '2023' ... --- _id: '14321' abstract: - lang: eng text: We demonstrate the possibility of a coupling between the magnetization direction of a ferromagnet and the tilting angle of adsorbed achiral molecules. To illustrate the mechanism of the coupling, we analyze a minimal Stoner model that includes Rashba spin–orbit coupling due to the electric field on the surface of the ferromagnet. The proposed mechanism allows us to study magnetic anisotropy of the system with an extended Stoner–Wohlfarth model and argue that adsorbed achiral molecules can change magnetocrystalline anisotropy of the substrate. Our research aims to motivate further experimental studies of the current-free chirality induced spin selectivity effect involving both enantiomers. acknowledgement: "We thank Zhanybek Alpichshev, Mohammad Reza Safari, Binghai Yan, and Yossi Paltiel for enlightening discussions.\r\nM.L. acknowledges support from the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). A. C. received funding from the European Union’s Horizon Europe research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101062862 - NeqMolRot." article_number: '104103' article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Ragheed full_name: Al Hyder, Ragheed id: d1c405be-ae15-11ed-8510-ccf53278162e last_name: Al Hyder - first_name: Alberto full_name: Cappellaro, Alberto id: 9d13b3cb-30a2-11eb-80dc-f772505e8660 last_name: Cappellaro orcid: 0000-0001-6110-2359 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Al Hyder R, Cappellaro A, Lemeshko M, Volosniev A. Achiral dipoles on a ferromagnet can affect its magnetization direction. The Journal of Chemical Physics. 2023;159(10). doi:10.1063/5.0165806 apa: Al Hyder, R., Cappellaro, A., Lemeshko, M., & Volosniev, A. (2023). Achiral dipoles on a ferromagnet can affect its magnetization direction. The Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/5.0165806 chicago: Al Hyder, Ragheed, Alberto Cappellaro, Mikhail Lemeshko, and Artem Volosniev. “Achiral Dipoles on a Ferromagnet Can Affect Its Magnetization Direction.” The Journal of Chemical Physics. AIP Publishing, 2023. https://doi.org/10.1063/5.0165806. ieee: R. Al Hyder, A. Cappellaro, M. Lemeshko, and A. Volosniev, “Achiral dipoles on a ferromagnet can affect its magnetization direction,” The Journal of Chemical Physics, vol. 159, no. 10. AIP Publishing, 2023. ista: Al Hyder R, Cappellaro A, Lemeshko M, Volosniev A. 2023. Achiral dipoles on a ferromagnet can affect its magnetization direction. The Journal of Chemical Physics. 159(10), 104103. mla: Al Hyder, Ragheed, et al. “Achiral Dipoles on a Ferromagnet Can Affect Its Magnetization Direction.” The Journal of Chemical Physics, vol. 159, no. 10, 104103, AIP Publishing, 2023, doi:10.1063/5.0165806. short: R. Al Hyder, A. Cappellaro, M. Lemeshko, A. Volosniev, The Journal of Chemical Physics 159 (2023). date_created: 2023-09-13T09:25:09Z date_published: 2023-09-11T00:00:00Z date_updated: 2023-09-20T09:48:12Z day: '11' ddc: - '530' department: - _id: MiLe doi: 10.1063/5.0165806 ec_funded: 1 external_id: arxiv: - '2306.17592' pmid: - '37694742' file: - access_level: open_access checksum: 507ab65ab29e2c987c94cabad7c5370b content_type: application/pdf creator: acappell date_created: 2023-09-13T09:34:20Z date_updated: 2023-09-13T09:34:20Z file_id: '14322' file_name: 104103_1_5.0165806.pdf file_size: 5749653 relation: main_file success: 1 file_date_updated: 2023-09-13T09:34:20Z has_accepted_license: '1' intvolume: ' 159' issue: '10' keyword: - Physical and Theoretical Chemistry - General Physics and Astronomy language: - iso: eng month: '09' oa: 1 oa_version: Published Version pmid: 1 project: - _id: bd7b5202-d553-11ed-ba76-9b1c1b258338 grant_number: '101062862' name: Non-equilibrium Field Theory of Molecular Rotations - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: The Journal of Chemical Physics publication_identifier: eissn: - 1089-7690 issn: - 0021-9606 publication_status: published publisher: AIP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Achiral dipoles on a ferromagnet can affect its magnetization direction tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 159 year: '2023' ... --- _id: '12836' abstract: - lang: eng text: Coherent control and manipulation of quantum degrees of freedom such as spins forms the basis of emerging quantum technologies. In this context, the robust valley degree of freedom and the associated valley pseudospin found in two-dimensional transition metal dichalcogenides is a highly attractive platform. Valley polarization and coherent superposition of valley states have been observed in these systems even up to room temperature. Control of valley coherence is an important building block for the implementation of valley qubit. Large magnetic fields or high-power lasers have been used in the past to demonstrate the control (initialization and rotation) of the valley coherent states. Here, the control of layer–valley coherence via strong coupling of valley excitons in bilayer WS2 to microcavity photons is demonstrated by exploiting the pseudomagnetic field arising in optical cavities owing to the transverse electric–transverse magnetic (TE–TM)mode splitting. The use of photonic structures to generate pseudomagnetic fields which can be used to manipulate exciton-polaritons presents an attractive approach to control optical responses without the need for large magnets or high-intensity optical pump powers. acknowledgement: The authors acknowledge insightful discussions with Prof. Wang Yao and graphics by Rezlind Bushati. M.K. and N.Y. acknowledge support from NSF grants NSF DMR-1709996 and NSF OMA 1936276. S.G. was supported by the Army Research Office Multidisciplinary University Research Initiative program (W911NF-17-1-0312) and V.M.M. by the Army Research Office grant (W911NF-22-1-0091). K.M acknowledges the SPARC program that supported his collaboration with the CUNY team. The authors acknowledge the Nanofabrication facility at the CUNY Advanced Science Research Center where the cavity devices were fabricated. article_number: '2202631' article_processing_charge: No article_type: original author: - first_name: Mandeep full_name: Khatoniar, Mandeep last_name: Khatoniar - first_name: Nicholas full_name: Yama, Nicholas last_name: Yama - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Sriram full_name: Guddala, Sriram last_name: Guddala - first_name: Pouyan full_name: Ghaemi, Pouyan last_name: Ghaemi - first_name: Kausik full_name: Majumdar, Kausik last_name: Majumdar - first_name: Vinod full_name: Menon, Vinod last_name: Menon citation: ama: Khatoniar M, Yama N, Ghazaryan A, et al. Optical manipulation of Layer–Valley coherence via strong exciton–photon coupling in microcavities. Advanced Optical Materials. 2023;11(13). doi:10.1002/adom.202202631 apa: Khatoniar, M., Yama, N., Ghazaryan, A., Guddala, S., Ghaemi, P., Majumdar, K., & Menon, V. (2023). Optical manipulation of Layer–Valley coherence via strong exciton–photon coupling in microcavities. Advanced Optical Materials. Wiley. https://doi.org/10.1002/adom.202202631 chicago: Khatoniar, Mandeep, Nicholas Yama, Areg Ghazaryan, Sriram Guddala, Pouyan Ghaemi, Kausik Majumdar, and Vinod Menon. “Optical Manipulation of Layer–Valley Coherence via Strong Exciton–Photon Coupling in Microcavities.” Advanced Optical Materials. Wiley, 2023. https://doi.org/10.1002/adom.202202631. ieee: M. Khatoniar et al., “Optical manipulation of Layer–Valley coherence via strong exciton–photon coupling in microcavities,” Advanced Optical Materials, vol. 11, no. 13. Wiley, 2023. ista: Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Majumdar K, Menon V. 2023. Optical manipulation of Layer–Valley coherence via strong exciton–photon coupling in microcavities. Advanced Optical Materials. 11(13), 2202631. mla: Khatoniar, Mandeep, et al. “Optical Manipulation of Layer–Valley Coherence via Strong Exciton–Photon Coupling in Microcavities.” Advanced Optical Materials, vol. 11, no. 13, 2202631, Wiley, 2023, doi:10.1002/adom.202202631. short: M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, K. Majumdar, V. Menon, Advanced Optical Materials 11 (2023). date_created: 2023-04-16T22:01:09Z date_published: 2023-07-04T00:00:00Z date_updated: 2023-10-04T11:15:17Z day: '04' department: - _id: MiLe doi: 10.1002/adom.202202631 external_id: arxiv: - '2211.08755' isi: - '000963866700001' intvolume: ' 11' isi: 1 issue: '13' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2211.08755 month: '07' oa: 1 oa_version: Preprint publication: Advanced Optical Materials publication_identifier: eissn: - 2195-1071 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Optical manipulation of Layer–Valley coherence via strong exciton–photon coupling in microcavities type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 11 year: '2023' ... --- _id: '14037' abstract: - lang: eng text: 'Traditionally, nuclear spin is not considered to affect biological processes. Recently, this has changed as isotopic fractionation that deviates from classical mass dependence was reported both in vitro and in vivo. In these cases, the isotopic effect correlates with the nuclear magnetic spin. Here, we show nuclear spin effects using stable oxygen isotopes (16O, 17O, and 18O) in two separate setups: an artificial dioxygen production system and biological aquaporin channels in cells. We observe that oxygen dynamics in chiral environments (in particular its transport) depend on nuclear spin, suggesting future applications for controlled isotope separation to be used, for instance, in NMR. To demonstrate the mechanism behind our findings, we formulate theoretical models based on a nuclear-spin-enhanced switch between electronic spin states. Accounting for the role of nuclear spin in biology can provide insights into the role of quantum effects in living systems and help inspire the development of future biotechnology solutions.' acknowledgement: N.M.-S. acknowledges the support of the Ministry of Energy, Israel, as part of the scholarship program for graduate students in the fields of energy. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). Y.P. acknowledges the support of the Ministry of Innovation, Science and Technology, Israel Grant No. 1001593872. Y.P acknowledges the support of the BSF-NSF 094 Grant No. 2022503. article_number: e2300828120 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Ofek full_name: Vardi, Ofek last_name: Vardi - first_name: Naama full_name: Maroudas-Sklare, Naama last_name: Maroudas-Sklare - first_name: Yuval full_name: Kolodny, Yuval last_name: Kolodny - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Amijai full_name: Saragovi, Amijai last_name: Saragovi - first_name: Nir full_name: Galili, Nir last_name: Galili - first_name: Stav full_name: Ferrera, Stav last_name: Ferrera - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Nir full_name: Yuran, Nir last_name: Yuran - first_name: Hagit P. full_name: Affek, Hagit P. last_name: Affek - first_name: Boaz full_name: Luz, Boaz last_name: Luz - first_name: Yonaton full_name: Goldsmith, Yonaton last_name: Goldsmith - first_name: Nir full_name: Keren, Nir last_name: Keren - first_name: Shira full_name: Yochelis, Shira last_name: Yochelis - first_name: Itay full_name: Halevy, Itay last_name: Halevy - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Yossi full_name: Paltiel, Yossi last_name: Paltiel citation: ama: Vardi O, Maroudas-Sklare N, Kolodny Y, et al. Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(32). doi:10.1073/pnas.2300828120 apa: Vardi, O., Maroudas-Sklare, N., Kolodny, Y., Volosniev, A., Saragovi, A., Galili, N., … Paltiel, Y. (2023). Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2300828120 chicago: Vardi, Ofek, Naama Maroudas-Sklare, Yuval Kolodny, Artem Volosniev, Amijai Saragovi, Nir Galili, Stav Ferrera, et al. “Nuclear Spin Effects in Biological Processes.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2300828120. ieee: O. Vardi et al., “Nuclear spin effects in biological processes,” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 32. National Academy of Sciences, 2023. ista: Vardi O, Maroudas-Sklare N, Kolodny Y, Volosniev A, Saragovi A, Galili N, Ferrera S, Ghazaryan A, Yuran N, Affek HP, Luz B, Goldsmith Y, Keren N, Yochelis S, Halevy I, Lemeshko M, Paltiel Y. 2023. Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. 120(32), e2300828120. mla: Vardi, Ofek, et al. “Nuclear Spin Effects in Biological Processes.” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 32, e2300828120, National Academy of Sciences, 2023, doi:10.1073/pnas.2300828120. short: O. Vardi, N. Maroudas-Sklare, Y. Kolodny, A. Volosniev, A. Saragovi, N. Galili, S. Ferrera, A. Ghazaryan, N. Yuran, H.P. Affek, B. Luz, Y. Goldsmith, N. Keren, S. Yochelis, I. Halevy, M. Lemeshko, Y. Paltiel, Proceedings of the National Academy of Sciences of the United States of America 120 (2023). date_created: 2023-08-13T22:01:12Z date_published: 2023-07-31T00:00:00Z date_updated: 2023-10-17T11:45:25Z day: '31' ddc: - '530' department: - _id: MiLe doi: 10.1073/pnas.2300828120 ec_funded: 1 external_id: pmid: - '37523549' file: - access_level: open_access checksum: a5ed64788a5acef9b9a300a26fa5a177 content_type: application/pdf creator: dernst date_created: 2023-08-14T07:43:45Z date_updated: 2023-08-14T07:43:45Z file_id: '14047' file_name: 2023_PNAS_Vardi.pdf file_size: 1003092 relation: main_file success: 1 file_date_updated: 2023-08-14T07:43:45Z has_accepted_license: '1' intvolume: ' 120' issue: '32' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Nuclear spin effects in biological processes tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 120 year: '2023' ... --- _id: '14486' abstract: - lang: eng text: We present a minimal model of ferroelectric large polarons, which are suggested as one of the mechanisms responsible for the unique charge transport properties of hybrid perovskites. We demonstrate that short-ranged charge–rotor interactions lead to long-range ferroelectric ordering of rotors, which strongly affects the carrier mobility. In the nonperturbative regime, where our theory cannot be reduced to any of the earlier models, we reveal that the polaron is characterized by large coherence length and a roughly tenfold increase of the effective mass as compared to the bare mass. These results are in good agreement with other theoretical predictions for ferroelectric polarons. Our model establishes a general phenomenological framework for ferroelectric polarons providing the starting point for future studies of their role in the transport properties of hybrid organic-inorganic perovskites. acknowledgement: We thank Zh. Alpichshev, A. Volosniev, and A. V. Zampetaki for fruitful discussions and comments. This project received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 101034413. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). article_number: '043016' article_processing_charge: Yes article_type: original author: - first_name: Georgios full_name: Koutentakis, Georgios id: d7b23d3a-9e21-11ec-b482-f76739596b95 last_name: Koutentakis - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Koutentakis G, Ghazaryan A, Lemeshko M. Rotor lattice model of ferroelectric large polarons. Physical Review Research. 2023;5(4). doi:10.1103/PhysRevResearch.5.043016 apa: Koutentakis, G., Ghazaryan, A., & Lemeshko, M. (2023). Rotor lattice model of ferroelectric large polarons. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.5.043016 chicago: Koutentakis, Georgios, Areg Ghazaryan, and Mikhail Lemeshko. “Rotor Lattice Model of Ferroelectric Large Polarons.” Physical Review Research. American Physical Society, 2023. https://doi.org/10.1103/PhysRevResearch.5.043016. ieee: G. Koutentakis, A. Ghazaryan, and M. Lemeshko, “Rotor lattice model of ferroelectric large polarons,” Physical Review Research, vol. 5, no. 4. American Physical Society, 2023. ista: Koutentakis G, Ghazaryan A, Lemeshko M. 2023. Rotor lattice model of ferroelectric large polarons. Physical Review Research. 5(4), 043016. mla: Koutentakis, Georgios, et al. “Rotor Lattice Model of Ferroelectric Large Polarons.” Physical Review Research, vol. 5, no. 4, 043016, American Physical Society, 2023, doi:10.1103/PhysRevResearch.5.043016. short: G. Koutentakis, A. Ghazaryan, M. Lemeshko, Physical Review Research 5 (2023). date_created: 2023-11-05T23:00:53Z date_published: 2023-10-05T00:00:00Z date_updated: 2023-11-07T07:53:39Z day: '05' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevResearch.5.043016 ec_funded: 1 external_id: arxiv: - '2301.09875' file: - access_level: open_access checksum: cb8de8fed6e09df1a18bd5a5aec5c55c content_type: application/pdf creator: dernst date_created: 2023-11-07T07:52:46Z date_updated: 2023-11-07T07:52:46Z file_id: '14493' file_name: 2023_PhysReviewResearch_Koutentakis.pdf file_size: 1127522 relation: main_file success: 1 file_date_updated: 2023-11-07T07:52:46Z has_accepted_license: '1' intvolume: ' 5' issue: '4' language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Rotor lattice model of ferroelectric large polarons tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 5 year: '2023' ... --- _id: '14513' abstract: - lang: eng text: Cold atomic gases have become a paradigmatic system for exploring fundamental physics, which at the same time allows for applications in quantum technologies. The accelerating developments in the field have led to a highly advanced set of engineering techniques that, for example, can tune interactions, shape the external geometry, select among a large set of atomic species with different properties, or control the number of atoms. In particular, it is possible to operate in lower dimensions and drive atomic systems into the strongly correlated regime. In this review, we discuss recent advances in few-body cold atom systems confined in low dimensions from a theoretical viewpoint. We mainly focus on bosonic systems in one dimension and provide an introduction to the static properties before we review the state-of-the-art research into quantum dynamical processes stimulated by the presence of correlations. Besides discussing the fundamental physical phenomena arising in these systems, we also provide an overview of the calculational and numerical tools and methods that are commonly used, thus delivering a balanced and comprehensive overview of the field. We conclude by giving an outlook on possible future directions that are interesting to explore in these correlated systems. acknowledgement: This review could not have been written without the many fruitful discussions and great collaborations with colleagues throughout the years, there are too many to mention. Here we acknowledge conversations regarding the context of the review with Joachim Brand, Fabian Brauneis, Adolfo del Campo, Alberto Cappellaro, Panagiotis Giannakeas, Tommaso Macrí, Oleksandr Marchukov, Lukas Rammelmüller and Manuel Valiente. S. I. M. acknowledges support from the NSF through a grant for ITAMP at Harvard University. T.F. acknowledges support from JSPS KAKENHI Grant Number JP23K03290 and T.F. and Th.B. acknowledge support from the Okinawa Institute for Science and Technology Graduate University, and JST Grant Number JPMJPF2221. A.F. and R. E. B. acknowledge support from CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) - Edital Universal 406563/2021-7. A. G. V. acknowledges support by European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411. P. S. is supported by the Cluster of Excellence ‘Advanced Imaging of Matter’ of the Deutsche Forschungsgemeinschaft (DFG) - EXC2056 - project ID 390715994. N. T. Z. is partially supported by the Independent Research Fund Denmark . article_processing_charge: No article_type: original author: - first_name: S. I. full_name: Mistakidis, S. I. last_name: Mistakidis - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: R. E. full_name: Barfknecht, R. E. last_name: Barfknecht - first_name: T. full_name: Fogarty, T. last_name: Fogarty - first_name: Th full_name: Busch, Th last_name: Busch - first_name: A. full_name: Foerster, A. last_name: Foerster - first_name: P. full_name: Schmelcher, P. last_name: Schmelcher - first_name: N. T. full_name: Zinner, N. T. last_name: Zinner citation: ama: Mistakidis SI, Volosniev A, Barfknecht RE, et al. Few-body Bose gases in low dimensions - A laboratory for quantum dynamics. Physics Reports. 2023;1042:1-108. doi:10.1016/j.physrep.2023.10.004 apa: Mistakidis, S. I., Volosniev, A., Barfknecht, R. E., Fogarty, T., Busch, T., Foerster, A., … Zinner, N. T. (2023). Few-body Bose gases in low dimensions - A laboratory for quantum dynamics. Physics Reports. Elsevier. https://doi.org/10.1016/j.physrep.2023.10.004 chicago: Mistakidis, S. I., Artem Volosniev, R. E. Barfknecht, T. Fogarty, Th Busch, A. Foerster, P. Schmelcher, and N. T. Zinner. “Few-Body Bose Gases in Low Dimensions - A Laboratory for Quantum Dynamics.” Physics Reports. Elsevier, 2023. https://doi.org/10.1016/j.physrep.2023.10.004. ieee: S. I. Mistakidis et al., “Few-body Bose gases in low dimensions - A laboratory for quantum dynamics,” Physics Reports, vol. 1042. Elsevier, pp. 1–108, 2023. ista: Mistakidis SI, Volosniev A, Barfknecht RE, Fogarty T, Busch T, Foerster A, Schmelcher P, Zinner NT. 2023. Few-body Bose gases in low dimensions - A laboratory for quantum dynamics. Physics Reports. 1042, 1–108. mla: Mistakidis, S. I., et al. “Few-Body Bose Gases in Low Dimensions - A Laboratory for Quantum Dynamics.” Physics Reports, vol. 1042, Elsevier, 2023, pp. 1–108, doi:10.1016/j.physrep.2023.10.004. short: S.I. Mistakidis, A. Volosniev, R.E. Barfknecht, T. Fogarty, T. Busch, A. Foerster, P. Schmelcher, N.T. Zinner, Physics Reports 1042 (2023) 1–108. date_created: 2023-11-12T23:00:54Z date_published: 2023-11-29T00:00:00Z date_updated: 2023-11-13T08:01:57Z day: '29' department: - _id: MiLe doi: 10.1016/j.physrep.2023.10.004 ec_funded: 1 external_id: arxiv: - '2202.11071' intvolume: ' 1042' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2202.11071 month: '11' oa: 1 oa_version: Preprint page: 1-108 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physics Reports publication_identifier: issn: - 0370-1573 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Few-body Bose gases in low dimensions - A laboratory for quantum dynamics type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 1042 year: '2023' ... --- _id: '14658' abstract: - lang: eng text: "We investigate spin-charge separation of a spin-\r\n1\r\n2\r\n Fermi system confined in a triple well where multiple bands are occupied. We assume that our finite fermionic system is close to fully spin polarized while being doped by a hole and an impurity fermion with opposite spin. Our setup involves ferromagnetic couplings among the particles in different bands, leading to the development of strong spin-transport correlations in an intermediate interaction regime. Interactions are then strong enough to lift the degeneracy among singlet and triplet spin configurations in the well of the spin impurity but not strong enough to prohibit hole-induced magnetic excitations to the singlet state. Despite the strong spin-hole correlations, the system exhibits spin-charge deconfinement allowing for long-range entanglement of the spatial and spin degrees of freedom." acknowledgement: This work has been funded by the Cluster of Excellence “Advanced Imaging of Matter” of the Deutsche Forschungsgemeinschaft (DFG)-EXC 2056-Project ID No. 390715994. G.M.K. gratefully acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 101034413. article_number: '043039' article_processing_charge: Yes article_type: original author: - first_name: J. M. full_name: Becker, J. M. last_name: Becker - first_name: Georgios full_name: Koutentakis, Georgios id: d7b23d3a-9e21-11ec-b482-f76739596b95 last_name: Koutentakis - first_name: P. full_name: Schmelcher, P. last_name: Schmelcher citation: ama: Becker JM, Koutentakis G, Schmelcher P. Spin-charge correlations in finite one-dimensional multiband Fermi systems. Physical Review Research. 2023;5(4). doi:10.1103/PhysRevResearch.5.043039 apa: Becker, J. M., Koutentakis, G., & Schmelcher, P. (2023). Spin-charge correlations in finite one-dimensional multiband Fermi systems. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.5.043039 chicago: Becker, J. M., Georgios Koutentakis, and P. Schmelcher. “Spin-Charge Correlations in Finite One-Dimensional Multiband Fermi Systems.” Physical Review Research. American Physical Society, 2023. https://doi.org/10.1103/PhysRevResearch.5.043039. ieee: J. M. Becker, G. Koutentakis, and P. Schmelcher, “Spin-charge correlations in finite one-dimensional multiband Fermi systems,” Physical Review Research, vol. 5, no. 4. American Physical Society, 2023. ista: Becker JM, Koutentakis G, Schmelcher P. 2023. Spin-charge correlations in finite one-dimensional multiband Fermi systems. Physical Review Research. 5(4), 043039. mla: Becker, J. M., et al. “Spin-Charge Correlations in Finite One-Dimensional Multiband Fermi Systems.” Physical Review Research, vol. 5, no. 4, 043039, American Physical Society, 2023, doi:10.1103/PhysRevResearch.5.043039. short: J.M. Becker, G. Koutentakis, P. Schmelcher, Physical Review Research 5 (2023). date_created: 2023-12-10T23:00:58Z date_published: 2023-10-12T00:00:00Z date_updated: 2023-12-11T10:55:52Z day: '12' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevResearch.5.043039 ec_funded: 1 external_id: arxiv: - '2305.09529' file: - access_level: open_access checksum: ee31c0d0de5d1b65591990ae6705a601 content_type: application/pdf creator: dernst date_created: 2023-12-11T10:49:07Z date_updated: 2023-12-11T10:49:07Z file_id: '14672' file_name: 2023_PhysReviewResearch_Becker.pdf file_size: 2362158 relation: main_file success: 1 file_date_updated: 2023-12-11T10:49:07Z has_accepted_license: '1' intvolume: ' 5' issue: '4' language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Spin-charge correlations in finite one-dimensional multiband Fermi systems tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 5 year: '2023' ... --- _id: '14650' abstract: - lang: eng text: We study the out-of-equilibrium quantum dynamics of dipolar polarons, i.e., impurities immersed in a dipolar Bose-Einstein condensate, after a quench of the impurity-boson interaction. We show that the dipolar nature of the condensate and of the impurity results in anisotropic relaxation dynamics, in particular, anisotropic dressing of the polaron. More relevantly for cold-atom setups, quench dynamics is strongly affected by the interplay between dipolar anisotropy and trap geometry. Our findings pave the way for simulating impurities in anisotropic media utilizing experiments with dipolar mixtures. acknowledgement: "We thank Lauriane Chomaz for useful discussions and comments on the manuscript. We also\r\nthank Ragheed Al Hyder for comments on the manuscript.\r\nG.B. acknowledges support from the Austrian Science Fund (FWF),\r\nunder Project No. M2641-N27. This work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1-\r\n390900948 (the Heidelberg STRUCTURES Excellence Cluster). A. G. V. acknowledges support from the European Union’s Horizon 2020 research and innovation programme under the\r\nMarie Skłodowska-Curie Grant Agreement No. 754411. L.A.P.A acknowledges by the PNRR\r\nMUR project PE0000023 - NQSTI and the Deutsche Forschungsgemeinschaft (DFG, German\r\nResearch Foundation) under Germany’s Excellence Strategy - EXC - 2123 Quantum Frontiers390837967 and FOR2247." article_number: '232' article_processing_charge: No article_type: original author: - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Luis full_name: Santos, Luis last_name: Santos - first_name: Luisllu A. full_name: Peña Ardila, Luisllu A. last_name: Peña Ardila citation: ama: Volosniev A, Bighin G, Santos L, Peña Ardila LA. Non-equilibrium dynamics of dipolar polarons. SciPost Physics. 2023;15(6). doi:10.21468/scipostphys.15.6.232 apa: Volosniev, A., Bighin, G., Santos, L., & Peña Ardila, L. A. (2023). Non-equilibrium dynamics of dipolar polarons. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.15.6.232 chicago: Volosniev, Artem, Giacomo Bighin, Luis Santos, and Luisllu A. Peña Ardila. “Non-Equilibrium Dynamics of Dipolar Polarons.” SciPost Physics. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphys.15.6.232. ieee: A. Volosniev, G. Bighin, L. Santos, and L. A. Peña Ardila, “Non-equilibrium dynamics of dipolar polarons,” SciPost Physics, vol. 15, no. 6. SciPost Foundation, 2023. ista: Volosniev A, Bighin G, Santos L, Peña Ardila LA. 2023. Non-equilibrium dynamics of dipolar polarons. SciPost Physics. 15(6), 232. mla: Volosniev, Artem, et al. “Non-Equilibrium Dynamics of Dipolar Polarons.” SciPost Physics, vol. 15, no. 6, 232, SciPost Foundation, 2023, doi:10.21468/scipostphys.15.6.232. short: A. Volosniev, G. Bighin, L. Santos, L.A. Peña Ardila, SciPost Physics 15 (2023). date_created: 2023-12-10T13:03:07Z date_published: 2023-12-07T00:00:00Z date_updated: 2023-12-11T07:44:08Z day: '07' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphys.15.6.232 ec_funded: 1 external_id: arxiv: - '2305.17969' file: - access_level: open_access checksum: e664372a1fe9d628a9bb1d135ebab7d8 content_type: application/pdf creator: dernst date_created: 2023-12-11T07:42:04Z date_updated: 2023-12-11T07:42:04Z file_id: '14669' file_name: 2023_SciPostPhysics_Volosniev.pdf file_size: 3543541 relation: main_file success: 1 file_date_updated: 2023-12-11T07:42:04Z has_accepted_license: '1' intvolume: ' 15' issue: '6' keyword: - General Physics and Astronomy language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: SciPost Physics publication_identifier: issn: - 2542-4653 publication_status: published publisher: SciPost Foundation quality_controlled: '1' status: public title: Non-equilibrium dynamics of dipolar polarons tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2023' ... --- _id: '13278' abstract: - lang: eng text: We present a numerical analysis of spin-1/2 fermions in a one-dimensional harmonic potential in the presence of a magnetic point-like impurity at the center of the trap. The model represents a few-body analogue of a magnetic impurity in the vicinity of an s-wave superconductor. Already for a few particles we find a ground-state level crossing between sectors with different fermion parities. We interpret this crossing as a few-body precursor of a quantum phase transition, which occurs when the impurity "breaks" a Cooper pair. This picture is further corroborated by analyzing density-density correlations in momentum space. Finally, we discuss how the system may be realized with existing cold-atoms platforms. article_number: '006' article_processing_charge: No article_type: original author: - first_name: Lukas full_name: Rammelmüller, Lukas last_name: Rammelmüller - first_name: David full_name: Huber, David last_name: Huber - first_name: Matija full_name: Čufar, Matija last_name: Čufar - first_name: Joachim full_name: Brand, Joachim last_name: Brand - first_name: Hans-Werner full_name: Hammer, Hans-Werner last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. 2023;14(1). doi:10.21468/scipostphys.14.1.006 apa: Rammelmüller, L., Huber, D., Čufar, M., Brand, J., Hammer, H.-W., & Volosniev, A. (2023). Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.14.1.006 chicago: Rammelmüller, Lukas, David Huber, Matija Čufar, Joachim Brand, Hans-Werner Hammer, and Artem Volosniev. “Magnetic Impurity in a One-Dimensional Few-Fermion System.” SciPost Physics. SciPost Foundation, 2023. https://doi.org/10.21468/scipostphys.14.1.006. ieee: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, and A. Volosniev, “Magnetic impurity in a one-dimensional few-fermion system,” SciPost Physics, vol. 14, no. 1. SciPost Foundation, 2023. ista: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. 2023. Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. 14(1), 006. mla: Rammelmüller, Lukas, et al. “Magnetic Impurity in a One-Dimensional Few-Fermion System.” SciPost Physics, vol. 14, no. 1, 006, SciPost Foundation, 2023, doi:10.21468/scipostphys.14.1.006. short: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, A. Volosniev, SciPost Physics 14 (2023). date_created: 2023-07-24T10:48:23Z date_published: 2023-01-24T00:00:00Z date_updated: 2023-12-13T11:39:32Z day: '24' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphys.14.1.006 external_id: arxiv: - '2204.01606' isi: - '001000325800008' file: - access_level: open_access checksum: ffdb70b9ae7aa45ea4ea6096ecbd6431 content_type: application/pdf creator: dernst date_created: 2023-07-31T08:44:38Z date_updated: 2023-07-31T08:44:38Z file_id: '13328' file_name: 2023_SciPostPhysics_Rammelmueller.pdf file_size: 1163444 relation: main_file success: 1 file_date_updated: 2023-07-31T08:44:38Z has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '1' keyword: - General Physics and Astronomy language: - iso: eng month: '01' oa: 1 oa_version: Published Version publication: SciPost Physics publication_identifier: issn: - 2542-4653 publication_status: published publisher: SciPost Foundation quality_controlled: '1' scopus_import: '1' status: public title: Magnetic impurity in a one-dimensional few-fermion system tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2023' ... --- _id: '14246' abstract: - lang: eng text: The model of a ring threaded by the Aharonov-Bohm flux underlies our understanding of a coupling between gauge potentials and matter. The typical formulation of the model is based upon a single particle picture, and should be extended when interactions with other particles become relevant. Here, we illustrate such an extension for a particle in an Aharonov-Bohm ring subject to interactions with a weakly interacting Bose gas. We show that the ground state of the system can be described using the Bose-polaron concept—a particle dressed by interactions with a bosonic environment. We connect the energy spectrum to the effective mass of the polaron, and demonstrate how to change currents in the system by tuning boson-particle interactions. Our results suggest the Aharonov-Bohm ring as a platform for studying coherence and few- to many-body crossover of quasi-particles that arise from an impurity immersed in a medium. acknowledgement: "Open Access funding enabled and organized by Projekt DEAL.\r\nWe would like to thank Jonas Jager for sharing his data with us in the early stages of this project. We thank Joachim Brand and Ray Yang for sharing with us data from Yang et al.46. This work has received funding from the DFG Project no. 413495248 [VO 2437/1-1] (F.B., H.-W.H., A.G.V.). We acknowledge support from the Deutsche Forschungsgemeinschaft (DFG - German Research Foundation) and the Open Access Publishing Fund of the Technical University of Darmstadt." article_number: '224' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Fabian full_name: Brauneis, Fabian last_name: Brauneis - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Hans-Werner full_name: Hammer, Hans-Werner last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Brauneis F, Ghazaryan A, Hammer H-W, Volosniev A. Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux. Communications Physics. 2023;6. doi:10.1038/s42005-023-01281-2 apa: Brauneis, F., Ghazaryan, A., Hammer, H.-W., & Volosniev, A. (2023). Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux. Communications Physics. Springer Nature. https://doi.org/10.1038/s42005-023-01281-2 chicago: Brauneis, Fabian, Areg Ghazaryan, Hans-Werner Hammer, and Artem Volosniev. “Emergence of a Bose Polaron in a Small Ring Threaded by the Aharonov-Bohm Flux.” Communications Physics. Springer Nature, 2023. https://doi.org/10.1038/s42005-023-01281-2. ieee: F. Brauneis, A. Ghazaryan, H.-W. Hammer, and A. Volosniev, “Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux,” Communications Physics, vol. 6. Springer Nature, 2023. ista: Brauneis F, Ghazaryan A, Hammer H-W, Volosniev A. 2023. Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux. Communications Physics. 6, 224. mla: Brauneis, Fabian, et al. “Emergence of a Bose Polaron in a Small Ring Threaded by the Aharonov-Bohm Flux.” Communications Physics, vol. 6, 224, Springer Nature, 2023, doi:10.1038/s42005-023-01281-2. short: F. Brauneis, A. Ghazaryan, H.-W. Hammer, A. Volosniev, Communications Physics 6 (2023). date_created: 2023-08-28T12:36:49Z date_published: 2023-08-22T00:00:00Z date_updated: 2023-12-13T12:21:09Z day: '22' ddc: - '530' department: - _id: MiLe doi: 10.1038/s42005-023-01281-2 external_id: arxiv: - '2301.10488' isi: - '001052577500002' file: - access_level: open_access checksum: 6edfc59b0ee7dc406d0968b05236e83d content_type: application/pdf creator: dernst date_created: 2023-09-05T08:45:49Z date_updated: 2023-09-05T08:45:49Z file_id: '14268' file_name: 2023_CommPhysics_Brauneis.pdf file_size: 855960 relation: main_file success: 1 file_date_updated: 2023-09-05T08:45:49Z has_accepted_license: '1' intvolume: ' 6' isi: 1 keyword: - General Physics and Astronomy language: - iso: eng month: '08' oa: 1 oa_version: Published Version publication: Communications Physics publication_identifier: issn: - 2399-3650 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Emergence of a Bose polaron in a small ring threaded by the Aharonov-Bohm flux tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2023' ... --- _id: '14238' abstract: - lang: eng text: We demonstrate that a sodium dimer, Na2(13Σ+u), residing on the surface of a helium nanodroplet, can be set into rotation by a nonresonant 1.0 ps infrared laser pulse. The time-dependent degree of alignment measured, exhibits a periodic, gradually decreasing structure that deviates qualitatively from that expected for gas-phase dimers. Comparison to alignment dynamics calculated from the time-dependent rotational Schrödinger equation shows that the deviation is due to the alignment dependent interaction between the dimer and the droplet surface. This interaction confines the dimer to the tangential plane of the droplet surface at the point where it resides and is the reason that the observed alignment dynamics is also well described by a 2D quantum rotor model. acknowledgement: H. S. acknowledges support from The Villum Foundation through a Villum Investigator Grant No. 25886. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). F. J. and R. E. Z. acknowledge support from the Centre for Scientific Computing, Aarhus and the JKU scientific computing administration, Linz, respectively. article_number: '053201' article_processing_charge: No article_type: original author: - first_name: Lorenz full_name: Kranabetter, Lorenz last_name: Kranabetter - first_name: Henrik H. full_name: Kristensen, Henrik H. last_name: Kristensen - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Constant A. full_name: Schouder, Constant A. last_name: Schouder - first_name: Adam S. full_name: Chatterley, Adam S. last_name: Chatterley - first_name: Paul full_name: Janssen, Paul last_name: Janssen - first_name: Frank full_name: Jensen, Frank last_name: Jensen - first_name: Robert E. full_name: Zillich, Robert E. last_name: Zillich - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt citation: ama: Kranabetter L, Kristensen HH, Ghazaryan A, et al. Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. 2023;131(5). doi:10.1103/PhysRevLett.131.053201 apa: Kranabetter, L., Kristensen, H. H., Ghazaryan, A., Schouder, C. A., Chatterley, A. S., Janssen, P., … Stapelfeldt, H. (2023). Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.131.053201 chicago: Kranabetter, Lorenz, Henrik H. Kristensen, Areg Ghazaryan, Constant A. Schouder, Adam S. Chatterley, Paul Janssen, Frank Jensen, Robert E. Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface.” Physical Review Letters. American Physical Society, 2023. https://doi.org/10.1103/PhysRevLett.131.053201. ieee: L. Kranabetter et al., “Nonadiabatic laser-induced alignment dynamics of molecules on a surface,” Physical Review Letters, vol. 131, no. 5. American Physical Society, 2023. ista: Kranabetter L, Kristensen HH, Ghazaryan A, Schouder CA, Chatterley AS, Janssen P, Jensen F, Zillich RE, Lemeshko M, Stapelfeldt H. 2023. Nonadiabatic laser-induced alignment dynamics of molecules on a surface. Physical Review Letters. 131(5), 053201. mla: Kranabetter, Lorenz, et al. “Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface.” Physical Review Letters, vol. 131, no. 5, 053201, American Physical Society, 2023, doi:10.1103/PhysRevLett.131.053201. short: L. Kranabetter, H.H. Kristensen, A. Ghazaryan, C.A. Schouder, A.S. Chatterley, P. Janssen, F. Jensen, R.E. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 131 (2023). date_created: 2023-08-27T22:01:16Z date_published: 2023-08-04T00:00:00Z date_updated: 2023-12-13T12:18:54Z day: '04' department: - _id: MiLe doi: 10.1103/PhysRevLett.131.053201 ec_funded: 1 external_id: arxiv: - '2308.15247' isi: - '001101784100001' pmid: - '37595218' intvolume: ' 131' isi: 1 issue: '5' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2308.15247 month: '08' oa: 1 oa_version: Preprint pmid: 1 project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Nonadiabatic laser-induced alignment dynamics of molecules on a surface type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 131 year: '2023' ... --- _id: '14756' abstract: - lang: eng text: "We prove the r-spin cobordism hypothesis in the setting of (weak) 2-categories for every positive integer r: the 2-groupoid of 2-dimensional fully extended r-spin TQFTs with given target is equivalent to the homotopy fixed points of an induced Spin 2r -action. In particular, such TQFTs are classified by fully dualisable objects together with a trivialisation of the rth power of their Serre automorphisms. For r=1, we recover the oriented case (on which our proof builds), while ordinary spin structures correspond to r=2.\r\nTo construct examples, we explicitly describe Spin 2r​-homotopy fixed points in the equivariant completion of any symmetric monoidal 2-category. We also show that every object in a 2-category of Landau–Ginzburg models gives rise to fully extended spin TQFTs and that half of these do not factor through the oriented bordism 2-category." acknowledgement: "N.C. is supported by the DFG Heisenberg Programme.\r\nWe are grateful to Tobias Dyckerhoff, Lukas Müller, Ingo Runkel, and Christopher Schommer-Pries for helpful discussions." article_processing_charge: Yes article_type: original author: - first_name: Nils full_name: Carqueville, Nils last_name: Carqueville - first_name: Lorant full_name: Szegedy, Lorant id: 7943226E-220E-11EA-94C7-D59F3DDC885E last_name: Szegedy orcid: 0000-0003-2834-5054 citation: ama: Carqueville N, Szegedy L. Fully extended r-spin TQFTs. Quantum Topology. 2023;14(3):467-532. doi:10.4171/qt/193 apa: Carqueville, N., & Szegedy, L. (2023). Fully extended r-spin TQFTs. Quantum Topology. European Mathematical Society. https://doi.org/10.4171/qt/193 chicago: Carqueville, Nils, and Lorant Szegedy. “Fully Extended R-Spin TQFTs.” Quantum Topology. European Mathematical Society, 2023. https://doi.org/10.4171/qt/193. ieee: N. Carqueville and L. Szegedy, “Fully extended r-spin TQFTs,” Quantum Topology, vol. 14, no. 3. European Mathematical Society, pp. 467–532, 2023. ista: Carqueville N, Szegedy L. 2023. Fully extended r-spin TQFTs. Quantum Topology. 14(3), 467–532. mla: Carqueville, Nils, and Lorant Szegedy. “Fully Extended R-Spin TQFTs.” Quantum Topology, vol. 14, no. 3, European Mathematical Society, 2023, pp. 467–532, doi:10.4171/qt/193. short: N. Carqueville, L. Szegedy, Quantum Topology 14 (2023) 467–532. date_created: 2024-01-08T13:14:48Z date_published: 2023-10-16T00:00:00Z date_updated: 2024-01-09T09:27:46Z day: '16' ddc: - '530' department: - _id: MiLe doi: 10.4171/qt/193 file: - access_level: open_access checksum: b0590aff6e7ec89cc149ba94d459d3a3 content_type: application/pdf creator: dernst date_created: 2024-01-09T09:25:34Z date_updated: 2024-01-09T09:25:34Z file_id: '14764' file_name: 2023_QuantumTopol_Carqueville.pdf file_size: 707344 relation: main_file success: 1 file_date_updated: 2024-01-09T09:25:34Z has_accepted_license: '1' intvolume: ' 14' issue: '3' keyword: - Geometry and Topology - Mathematical Physics language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: 467-532 publication: Quantum Topology publication_identifier: issn: - 1663-487X publication_status: published publisher: European Mathematical Society quality_controlled: '1' scopus_import: '1' status: public title: Fully extended r-spin TQFTs tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2023' ... --- _id: '10845' abstract: - lang: eng text: We study an impurity with a resonance level whose position coincides with the Fermi energy of the surrounding Fermi gas. An impurity causes a rapid variation of the scattering phase shift for fermions at the Fermi surface, introducing a new characteristic length scale into the problem. We investigate manifestations of this length scale in the self-energy of the impurity and in the density of the bath. Our calculations reveal a model-independent deformation of the density of the Fermi gas, which is determined by the width of the resonance. To provide a broader picture, we investigate time evolution of the density in quench dynamics, and study the behavior of the system at finite temperatures. Finally, we briefly discuss implications of our findings for the Fermi-polaron problem. acknowledgement: M.L. acknowledges support by the Austrian Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council (ERC) starting Grant No. 801770 (ANGULON). A.G.V. acknowledges support by European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411. article_number: '013160' article_processing_charge: No article_type: original author: - first_name: Mikhail full_name: Maslov, Mikhail id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87 last_name: Maslov orcid: 0000-0003-4074-2570 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Maslov M, Lemeshko M, Volosniev A. Impurity with a resonance in the vicinity of the Fermi energy. Physical Review Research. 2022;4. doi:10.1103/PhysRevResearch.4.013160 apa: Maslov, M., Lemeshko, M., & Volosniev, A. (2022). Impurity with a resonance in the vicinity of the Fermi energy. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.4.013160 chicago: Maslov, Mikhail, Mikhail Lemeshko, and Artem Volosniev. “Impurity with a Resonance in the Vicinity of the Fermi Energy.” Physical Review Research. American Physical Society, 2022. https://doi.org/10.1103/PhysRevResearch.4.013160. ieee: M. Maslov, M. Lemeshko, and A. Volosniev, “Impurity with a resonance in the vicinity of the Fermi energy,” Physical Review Research, vol. 4. American Physical Society, 2022. ista: Maslov M, Lemeshko M, Volosniev A. 2022. Impurity with a resonance in the vicinity of the Fermi energy. Physical Review Research. 4, 013160. mla: Maslov, Mikhail, et al. “Impurity with a Resonance in the Vicinity of the Fermi Energy.” Physical Review Research, vol. 4, 013160, American Physical Society, 2022, doi:10.1103/PhysRevResearch.4.013160. short: M. Maslov, M. Lemeshko, A. Volosniev, Physical Review Research 4 (2022). date_created: 2022-03-13T23:01:46Z date_published: 2022-03-01T00:00:00Z date_updated: 2022-03-14T08:42:24Z day: '01' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevResearch.4.013160 ec_funded: 1 external_id: arxiv: - '2111.13570' file: - access_level: open_access checksum: 62f64b3421a969656ebf52467fa7b6e8 content_type: application/pdf creator: dernst date_created: 2022-03-14T08:38:49Z date_updated: 2022-03-14T08:38:49Z file_id: '10848' file_name: 2022_PhysicalReviewResearch_Maslov.pdf file_size: 1258324 relation: main_file success: 1 file_date_updated: 2022-03-14T08:38:49Z has_accepted_license: '1' intvolume: ' 4' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Impurity with a resonance in the vicinity of the Fermi energy tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 4 year: '2022' ... --- _id: '10771' abstract: - lang: eng text: A critical overview of the theory of the chirality-induced spin selectivity (CISS) effect, that is, phenomena in which the chirality of molecular species imparts significant spin selectivity to various electron processes, is provided. Based on discussions in a recently held workshop, and further work published since, the status of CISS effects—in electron transmission, electron transport, and chemical reactions—is reviewed. For each, a detailed discussion of the state-of-the-art in theoretical understanding is provided and remaining challenges and research opportunities are identified. article_number: '2106629' article_processing_charge: No article_type: review author: - first_name: Ferdinand full_name: Evers, Ferdinand last_name: Evers - first_name: Amnon full_name: Aharony, Amnon last_name: Aharony - first_name: Nir full_name: Bar-Gill, Nir last_name: Bar-Gill - first_name: Ora full_name: Entin-Wohlman, Ora last_name: Entin-Wohlman - first_name: Per full_name: Hedegård, Per last_name: Hedegård - first_name: Oded full_name: Hod, Oded last_name: Hod - first_name: Pavel full_name: Jelinek, Pavel last_name: Jelinek - first_name: Grzegorz full_name: Kamieniarz, Grzegorz last_name: Kamieniarz - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Karen full_name: Michaeli, Karen last_name: Michaeli - first_name: Vladimiro full_name: Mujica, Vladimiro last_name: Mujica - first_name: Ron full_name: Naaman, Ron last_name: Naaman - first_name: Yossi full_name: Paltiel, Yossi last_name: Paltiel - first_name: Sivan full_name: Refaely-Abramson, Sivan last_name: Refaely-Abramson - first_name: Oren full_name: Tal, Oren last_name: Tal - first_name: Jos full_name: Thijssen, Jos last_name: Thijssen - first_name: Michael full_name: Thoss, Michael last_name: Thoss - first_name: Jan M. full_name: Van Ruitenbeek, Jan M. last_name: Van Ruitenbeek - first_name: Latha full_name: Venkataraman, Latha last_name: Venkataraman - first_name: David H. full_name: Waldeck, David H. last_name: Waldeck - first_name: Binghai full_name: Yan, Binghai last_name: Yan - first_name: Leeor full_name: Kronik, Leeor last_name: Kronik citation: ama: 'Evers F, Aharony A, Bar-Gill N, et al. Theory of chirality induced spin selectivity: Progress and challenges. Advanced Materials. 2022;34(13). doi:10.1002/adma.202106629' apa: 'Evers, F., Aharony, A., Bar-Gill, N., Entin-Wohlman, O., Hedegård, P., Hod, O., … Kronik, L. (2022). Theory of chirality induced spin selectivity: Progress and challenges. Advanced Materials. Wiley. https://doi.org/10.1002/adma.202106629' chicago: 'Evers, Ferdinand, Amnon Aharony, Nir Bar-Gill, Ora Entin-Wohlman, Per Hedegård, Oded Hod, Pavel Jelinek, et al. “Theory of Chirality Induced Spin Selectivity: Progress and Challenges.” Advanced Materials. Wiley, 2022. https://doi.org/10.1002/adma.202106629.' ieee: 'F. Evers et al., “Theory of chirality induced spin selectivity: Progress and challenges,” Advanced Materials, vol. 34, no. 13. Wiley, 2022.' ista: 'Evers F, Aharony A, Bar-Gill N, Entin-Wohlman O, Hedegård P, Hod O, Jelinek P, Kamieniarz G, Lemeshko M, Michaeli K, Mujica V, Naaman R, Paltiel Y, Refaely-Abramson S, Tal O, Thijssen J, Thoss M, Van Ruitenbeek JM, Venkataraman L, Waldeck DH, Yan B, Kronik L. 2022. Theory of chirality induced spin selectivity: Progress and challenges. Advanced Materials. 34(13), 2106629.' mla: 'Evers, Ferdinand, et al. “Theory of Chirality Induced Spin Selectivity: Progress and Challenges.” Advanced Materials, vol. 34, no. 13, 2106629, Wiley, 2022, doi:10.1002/adma.202106629.' short: F. Evers, A. Aharony, N. Bar-Gill, O. Entin-Wohlman, P. Hedegård, O. Hod, P. Jelinek, G. Kamieniarz, M. Lemeshko, K. Michaeli, V. Mujica, R. Naaman, Y. Paltiel, S. Refaely-Abramson, O. Tal, J. Thijssen, M. Thoss, J.M. Van Ruitenbeek, L. Venkataraman, D.H. Waldeck, B. Yan, L. Kronik, Advanced Materials 34 (2022). date_created: 2022-02-20T23:01:33Z date_published: 2022-04-01T00:00:00Z date_updated: 2023-08-02T14:30:22Z day: '01' department: - _id: MiLe doi: 10.1002/adma.202106629 external_id: arxiv: - '2108.09998' isi: - '000753795900001' intvolume: ' 34' isi: 1 issue: '13' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2108.09998 month: '04' oa: 1 oa_version: Preprint publication: Advanced Materials publication_identifier: eissn: - '15214095' issn: - '09359648' publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: 'Theory of chirality induced spin selectivity: Progress and challenges' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 34 year: '2022' ... --- _id: '11552' abstract: - lang: eng text: Rotational dynamics of D2 molecules inside helium nanodroplets is induced by a moderately intense femtosecond pump pulse and measured as a function of time by recording the yield of HeD+ ions, created through strong-field dissociative ionization with a delayed femtosecond probe pulse. The yield oscillates with a period of 185 fs, reflecting field-free rotational wave packet dynamics, and the oscillation persists for more than 500 periods. Within the experimental uncertainty, the rotational constant BHe of the in-droplet D2 molecule, determined by Fourier analysis, is the same as Bgas for an isolated D2 molecule. Our observations show that the D2 molecules inside helium nanodroplets essentially rotate as free D2 molecules. article_number: '243201' article_processing_charge: No author: - first_name: Junjie full_name: Qiang, Junjie last_name: Qiang - first_name: Lianrong full_name: Zhou, Lianrong last_name: Zhou - first_name: Peifen full_name: Lu, Peifen last_name: Lu - first_name: Kang full_name: Lin, Kang last_name: Lin - first_name: Yongzhe full_name: Ma, Yongzhe last_name: Ma - first_name: Shengzhe full_name: Pan, Shengzhe last_name: Pan - first_name: Chenxu full_name: Lu, Chenxu last_name: Lu - first_name: Wenyu full_name: Jiang, Wenyu last_name: Jiang - first_name: Fenghao full_name: Sun, Fenghao last_name: Sun - first_name: Wenbin full_name: Zhang, Wenbin last_name: Zhang - first_name: Hui full_name: Li, Hui last_name: Li - first_name: Xiaochun full_name: Gong, Xiaochun last_name: Gong - first_name: Ilya Sh full_name: Averbukh, Ilya Sh last_name: Averbukh - first_name: Yehiam full_name: Prior, Yehiam last_name: Prior - first_name: Constant A. full_name: Schouder, Constant A. last_name: Schouder - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt - first_name: Igor full_name: Cherepanov, Igor id: 339C7E5A-F248-11E8-B48F-1D18A9856A87 last_name: Cherepanov - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Wolfgang full_name: Jäger, Wolfgang last_name: Jäger - first_name: Jian full_name: Wu, Jian last_name: Wu citation: ama: Qiang J, Zhou L, Lu P, et al. Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets. Physical Review Letters. 2022;128(24). doi:10.1103/PhysRevLett.128.243201 apa: Qiang, J., Zhou, L., Lu, P., Lin, K., Ma, Y., Pan, S., … Wu, J. (2022). Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.128.243201 chicago: Qiang, Junjie, Lianrong Zhou, Peifen Lu, Kang Lin, Yongzhe Ma, Shengzhe Pan, Chenxu Lu, et al. “Femtosecond Rotational Dynamics of D2 Molecules in Superfluid Helium Nanodroplets.” Physical Review Letters. American Physical Society, 2022. https://doi.org/10.1103/PhysRevLett.128.243201. ieee: J. Qiang et al., “Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets,” Physical Review Letters, vol. 128, no. 24. American Physical Society, 2022. ista: Qiang J, Zhou L, Lu P, Lin K, Ma Y, Pan S, Lu C, Jiang W, Sun F, Zhang W, Li H, Gong X, Averbukh IS, Prior Y, Schouder CA, Stapelfeldt H, Cherepanov I, Lemeshko M, Jäger W, Wu J. 2022. Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets. Physical Review Letters. 128(24), 243201. mla: Qiang, Junjie, et al. “Femtosecond Rotational Dynamics of D2 Molecules in Superfluid Helium Nanodroplets.” Physical Review Letters, vol. 128, no. 24, 243201, American Physical Society, 2022, doi:10.1103/PhysRevLett.128.243201. short: J. Qiang, L. Zhou, P. Lu, K. Lin, Y. Ma, S. Pan, C. Lu, W. Jiang, F. Sun, W. Zhang, H. Li, X. Gong, I.S. Averbukh, Y. Prior, C.A. Schouder, H. Stapelfeldt, I. Cherepanov, M. Lemeshko, W. Jäger, J. Wu, Physical Review Letters 128 (2022). date_created: 2022-07-10T22:01:52Z date_published: 2022-06-16T00:00:00Z date_updated: 2023-08-03T11:54:14Z day: '16' department: - _id: MiLe doi: 10.1103/PhysRevLett.128.243201 ec_funded: 1 external_id: arxiv: - '2201.09281' isi: - '000820659700002' intvolume: ' 128' isi: 1 issue: '24' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2201.09281 month: '06' oa: 1 oa_version: Submitted Version project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: Physical Review Letters publication_identifier: eissn: - '10797114' issn: - '00319007' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 128 year: '2022' ... --- _id: '11590' abstract: - lang: eng text: 'We investigate the ground-state properties of weakly repulsive one-dimensional bosons in the presence of an attractive zero-range impurity potential. First, we derive mean-field solutions to the problem on a finite ring for the two asymptotic cases: (i) all bosons are bound to the impurity and (ii) all bosons are in a scattering state. Moreover, we derive the critical line that separates these regimes in the parameter space. In the thermodynamic limit, this critical line determines the maximum number of bosons that can be bound by the impurity potential, forming an artificial atom. Second, we validate the mean-field results using the flow equation approach and the multi-layer multi-configuration time-dependent Hartree method for atomic mixtures. While beyond-mean-field effects destroy long-range order in the Bose gas, the critical boson number is unaffected. Our findings are important for understanding such artificial atoms in low-density Bose gases with static and mobile impurities.' acknowledgement: This work has received funding from the DFG Project No. 413495248 [VO 2437/1-1] (FB, H-WH, AGV) and European Union's Horizon 2020 research and innovation programme under the Marie Skĺodowska-Curie Grant Agreement No. 754411 (AGV). ML acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). SIM acknowledges support from the NSF through a grant for ITAMP at Harvard University. article_number: '063036' article_processing_charge: No article_type: original author: - first_name: Fabian full_name: Brauneis, Fabian last_name: Brauneis - first_name: Timothy G. full_name: Backert, Timothy G. last_name: Backert - first_name: Simeon I. full_name: Mistakidis, Simeon I. last_name: Mistakidis - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Hans Werner full_name: Hammer, Hans Werner last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Brauneis F, Backert TG, Mistakidis SI, Lemeshko M, Hammer HW, Volosniev A. Artificial atoms from cold bosons in one dimension. New Journal of Physics. 2022;24(6). doi:10.1088/1367-2630/ac78d8 apa: Brauneis, F., Backert, T. G., Mistakidis, S. I., Lemeshko, M., Hammer, H. W., & Volosniev, A. (2022). Artificial atoms from cold bosons in one dimension. New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/ac78d8 chicago: Brauneis, Fabian, Timothy G. Backert, Simeon I. Mistakidis, Mikhail Lemeshko, Hans Werner Hammer, and Artem Volosniev. “Artificial Atoms from Cold Bosons in One Dimension.” New Journal of Physics. IOP Publishing, 2022. https://doi.org/10.1088/1367-2630/ac78d8. ieee: F. Brauneis, T. G. Backert, S. I. Mistakidis, M. Lemeshko, H. W. Hammer, and A. Volosniev, “Artificial atoms from cold bosons in one dimension,” New Journal of Physics, vol. 24, no. 6. IOP Publishing, 2022. ista: Brauneis F, Backert TG, Mistakidis SI, Lemeshko M, Hammer HW, Volosniev A. 2022. Artificial atoms from cold bosons in one dimension. New Journal of Physics. 24(6), 063036. mla: Brauneis, Fabian, et al. “Artificial Atoms from Cold Bosons in One Dimension.” New Journal of Physics, vol. 24, no. 6, 063036, IOP Publishing, 2022, doi:10.1088/1367-2630/ac78d8. short: F. Brauneis, T.G. Backert, S.I. Mistakidis, M. Lemeshko, H.W. Hammer, A. Volosniev, New Journal of Physics 24 (2022). date_created: 2022-07-17T22:01:55Z date_published: 2022-06-01T00:00:00Z date_updated: 2023-08-03T11:57:41Z day: '01' ddc: - '530' department: - _id: MiLe doi: 10.1088/1367-2630/ac78d8 ec_funded: 1 external_id: isi: - '000818530000001' file: - access_level: open_access checksum: dc67b60f2e50e9ef2bd820ca0d7333d2 content_type: application/pdf creator: dernst date_created: 2022-07-18T06:33:13Z date_updated: 2022-07-18T06:33:13Z file_id: '11594' file_name: 2022_NewJournalPhysics_Brauneis.pdf file_size: 3415721 relation: main_file success: 1 file_date_updated: 2022-07-18T06:33:13Z has_accepted_license: '1' intvolume: ' 24' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: New Journal of Physics publication_identifier: issn: - 1367-2630 publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Artificial atoms from cold bosons in one dimension tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 24 year: '2022' ... --- _id: '11592' abstract: - lang: eng text: 'We compare recent experimental results [Science 375, 528 (2022)] of the superfluid unitary Fermi gas near the critical temperature with a thermodynamic model based on the elementary excitations of the system. We find good agreement between experimental data and our theory for several quantities such as first sound, second sound, and superfluid fraction. We also show that mode mixing between first and second sound occurs. Finally, we characterize the response amplitude to a density perturbation: Close to the critical temperature both first and second sound can be excited through a density perturbation, whereas at lower temperatures only the first sound mode exhibits a significant response.' acknowledgement: The authors gratefully acknowledge stimulating discussions with T. Enss, and thank an anonymous referee for suggestions and remarks that allowed us to improve the original manuscript. This work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). article_number: '063329' article_processing_charge: No article_type: original author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Alberto full_name: Cappellaro, Alberto id: 9d13b3cb-30a2-11eb-80dc-f772505e8660 last_name: Cappellaro orcid: 0000-0001-6110-2359 - first_name: L. full_name: Salasnich, L. last_name: Salasnich citation: ama: 'Bighin G, Cappellaro A, Salasnich L. Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations. Physical Review A. 2022;105(6). doi:10.1103/PhysRevA.105.063329' apa: 'Bighin, G., Cappellaro, A., & Salasnich, L. (2022). Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.105.063329' chicago: 'Bighin, Giacomo, Alberto Cappellaro, and L. Salasnich. “Unitary Fermi Superfluid near the Critical Temperature: Thermodynamics and Sound Modes from Elementary Excitations.” Physical Review A. American Physical Society, 2022. https://doi.org/10.1103/PhysRevA.105.063329.' ieee: 'G. Bighin, A. Cappellaro, and L. Salasnich, “Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations,” Physical Review A, vol. 105, no. 6. American Physical Society, 2022.' ista: 'Bighin G, Cappellaro A, Salasnich L. 2022. Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations. Physical Review A. 105(6), 063329.' mla: 'Bighin, Giacomo, et al. “Unitary Fermi Superfluid near the Critical Temperature: Thermodynamics and Sound Modes from Elementary Excitations.” Physical Review A, vol. 105, no. 6, 063329, American Physical Society, 2022, doi:10.1103/PhysRevA.105.063329.' short: G. Bighin, A. Cappellaro, L. Salasnich, Physical Review A 105 (2022). date_created: 2022-07-17T22:01:55Z date_published: 2022-06-30T00:00:00Z date_updated: 2023-08-03T12:00:11Z day: '30' department: - _id: MiLe doi: 10.1103/PhysRevA.105.063329 external_id: arxiv: - '2206.03924' isi: - '000829758500010' intvolume: ' 105' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.2206.03924' month: '06' oa: 1 oa_version: Preprint publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Unitary Fermi superfluid near the critical temperature: Thermodynamics and sound modes from elementary excitations' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 105 year: '2022' ... --- _id: '11998' abstract: - lang: eng text: Recently it became possible to study highly excited rotational states of molecules in superfluid helium through nonadiabatic alignment experiments (Cherepanov et al 2021 Phys. Rev. A 104 L061303). This calls for theoretical approaches that go beyond explaining renormalized values of molecular spectroscopic constants, which suffices when only the lowest few rotational states are involved. As the first step in this direction, here we present a basic quantum mechanical model describing highly excited rotational states of molecules in superfluid helium nanodroplets. We show that a linear molecule immersed in a superfluid can be seen as an effective symmetric top, similar to the rotational structure of radicals, such as OH or NO, but with the angular momentum of the superfluid playing the role of the electronic angular momentum in free molecules. The simple theory sheds light onto what happens when the rotational angular momentum of the molecule increases beyond the lowest excited states accessible by infrared spectroscopy. In addition, the model allows to estimate the effective rotational and centrifugal distortion constants for a broad range of species and to explain the crossover between light and heavy molecules in superfluid 4He in terms of the many-body wavefunction structure. Some of the above mentioned insights can be acquired by analyzing a simple 2 × 2 matrix. acknowledgement: IC acknowledges the support by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. GB acknowledges support from the Austrian Science Fund (FWF), under Project No. M2461-N27 and from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy EXC2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). ML acknowledges support by the Austrian Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council (ERC) starting Grant No. 801770 (ANGULON). HS acknowledges support from the Independent Research Fund Denmark (Project No. 8021-00232B) and from the Villum Fonden through a Villum Investigator Grant No. 25886. article_number: '075004' article_processing_charge: Yes article_type: original author: - first_name: Igor full_name: Cherepanov, Igor id: 339C7E5A-F248-11E8-B48F-1D18A9856A87 last_name: Cherepanov - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Constant A. full_name: Schouder, Constant A. last_name: Schouder - first_name: Adam S. full_name: Chatterley, Adam S. last_name: Chatterley - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Stapelfeldt H, Lemeshko M. A simple model for high rotational excitations of molecules in a superfluid. New Journal of Physics. 2022;24(7). doi:10.1088/1367-2630/ac8113 apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Stapelfeldt, H., & Lemeshko, M. (2022). A simple model for high rotational excitations of molecules in a superfluid. New Journal of Physics. IOP. https://doi.org/10.1088/1367-2630/ac8113 chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley, Henrik Stapelfeldt, and Mikhail Lemeshko. “A Simple Model for High Rotational Excitations of Molecules in a Superfluid.” New Journal of Physics. IOP, 2022. https://doi.org/10.1088/1367-2630/ac8113. ieee: I. Cherepanov, G. Bighin, C. A. Schouder, A. S. Chatterley, H. Stapelfeldt, and M. Lemeshko, “A simple model for high rotational excitations of molecules in a superfluid,” New Journal of Physics, vol. 24, no. 7. IOP, 2022. ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Stapelfeldt H, Lemeshko M. 2022. A simple model for high rotational excitations of molecules in a superfluid. New Journal of Physics. 24(7), 075004. mla: Cherepanov, Igor, et al. “A Simple Model for High Rotational Excitations of Molecules in a Superfluid.” New Journal of Physics, vol. 24, no. 7, 075004, IOP, 2022, doi:10.1088/1367-2630/ac8113. short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, H. Stapelfeldt, M. Lemeshko, New Journal of Physics 24 (2022). date_created: 2022-08-28T22:02:01Z date_published: 2022-08-11T00:00:00Z date_updated: 2023-08-03T13:19:06Z day: '11' ddc: - '530' department: - _id: MiLe doi: 10.1088/1367-2630/ac8113 ec_funded: 1 external_id: isi: - '000839216900001' file: - access_level: open_access checksum: 10116a08d3489befc13dba2cc44490f1 content_type: application/pdf creator: alisjak date_created: 2022-08-29T09:57:40Z date_updated: 2022-08-29T09:57:40Z file_id: '12005' file_name: 2022_NewJournalofPhysics_Cherepanov.pdf file_size: 1912882 relation: main_file success: 1 file_date_updated: 2022-08-29T09:57:40Z has_accepted_license: '1' intvolume: ' 24' isi: 1 issue: '7' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities publication: New Journal of Physics publication_identifier: issn: - 1367-2630 publication_status: published publisher: IOP quality_controlled: '1' scopus_import: '1' status: public title: A simple model for high rotational excitations of molecules in a superfluid tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 24 year: '2022' ... --- _id: '11997' abstract: - lang: eng text: "We study the fate of an impurity in an ultracold heteronuclear Bose mixture, focusing on the experimentally relevant case of a ⁴¹K - ⁸⁷Rb mixture, with the impurity in a ⁴¹K hyperfine state. Our paper provides a comprehensive description of an impurity in a BEC mixture with contact interactions across its phase diagram. We present results for the miscible and immiscible regimes, as well as for the impurity in a self-bound quantum droplet. Here, varying the interactions, we find exotic states where the impurity localizes either at the center or\r\nat the surface of the droplet. " acknowledgement: We thank A. Simoni for providing the calculations of the intercomponent scattering lengths. We gratefully acknowledge stimulating discussions with L. A. Peña Ardila, R. Schmidt, H. Silva, V. Zampronio, and M. Prevedelli for careful reading. G.B. acknowledges support from the Austrian Science Fund (FWF) under Project No. M2641-N27. T.M. acknowledges CNPq for support through Bolsa de produtividade em Pesquisa No. 311079/2015-6. This work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy No. EXC2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). This work was supported by the Serrapilheira Institute (Grant No. Serra-1812-27802). We thank the High-Performance Computing Center (NPAD) at UFRN for providing computational resources. article_number: '023301' article_processing_charge: No article_type: original author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: A. full_name: Burchianti, A. last_name: Burchianti - first_name: F. full_name: Minardi, F. last_name: Minardi - first_name: T. full_name: Macrì, T. last_name: Macrì citation: ama: Bighin G, Burchianti A, Minardi F, Macrì T. Impurity in a heteronuclear two-component Bose mixture. Physical Review A. 2022;106(2). doi:10.1103/PhysRevA.106.023301 apa: Bighin, G., Burchianti, A., Minardi, F., & Macrì, T. (2022). Impurity in a heteronuclear two-component Bose mixture. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.106.023301 chicago: Bighin, Giacomo, A. Burchianti, F. Minardi, and T. Macrì. “Impurity in a Heteronuclear Two-Component Bose Mixture.” Physical Review A. American Physical Society, 2022. https://doi.org/10.1103/PhysRevA.106.023301. ieee: G. Bighin, A. Burchianti, F. Minardi, and T. Macrì, “Impurity in a heteronuclear two-component Bose mixture,” Physical Review A, vol. 106, no. 2. American Physical Society, 2022. ista: Bighin G, Burchianti A, Minardi F, Macrì T. 2022. Impurity in a heteronuclear two-component Bose mixture. Physical Review A. 106(2), 023301. mla: Bighin, Giacomo, et al. “Impurity in a Heteronuclear Two-Component Bose Mixture.” Physical Review A, vol. 106, no. 2, 023301, American Physical Society, 2022, doi:10.1103/PhysRevA.106.023301. short: G. Bighin, A. Burchianti, F. Minardi, T. Macrì, Physical Review A 106 (2022). date_created: 2022-08-28T22:02:00Z date_published: 2022-08-04T00:00:00Z date_updated: 2023-08-03T13:20:42Z day: '04' department: - _id: MiLe doi: 10.1103/PhysRevA.106.023301 external_id: arxiv: - '2109.07451' isi: - '000837953600006' intvolume: ' 106' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2109.07451 month: '08' oa: 1 oa_version: Preprint project: - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Impurity in a heteronuclear two-component Bose mixture type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 106 year: '2022' ... --- _id: '12139' abstract: - lang: eng text: We demonstrate the formation of robust zero-energy modes close to magnetic impurities in the iron-based superconductor FeSe1-z Tez. We find that the Zeeman field generated by the impurity favors a spin-triplet interorbital pairing as opposed to the spin-singlet intraorbital pairing prevalent in the bulk. The preferred spin-triplet pairing preserves time-reversal symmetry and is topological, as robust, topologically protected zero modes emerge at the boundary between regions with different pairing states. Moreover, the zero modes form Kramers doublets that are insensitive to the direction of the spin polarization or to the separation between impurities. We argue that our theoretical results are consistent with recent experimental measurements on FeSe1-z Tez. acknowledgement: "We thank Armin Rahmani, Andrey V. Chubukov, Jay D. Sau and Ruixing Zhang for fruitful discussions. AK and PG are supported by NSF-DMR2037996. PG also acknowledges support from NSF-DMR1824265. RMF was supported by the U. S. Department of Energy, Office\r\nof Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Award No. DE-SC0020045. Part of this work was performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1607611. " article_number: L201107 article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Ammar full_name: Kirmani, Ammar last_name: Kirmani - first_name: Rafael M. full_name: Fernandes, Rafael M. last_name: Fernandes - first_name: Pouyan full_name: Ghaemi, Pouyan last_name: Ghaemi citation: ama: Ghazaryan A, Kirmani A, Fernandes RM, Ghaemi P. Anomalous Shiba states in topological iron-based superconductors. Physical Review B. 2022;106(20). doi:10.1103/physrevb.106.l201107 apa: Ghazaryan, A., Kirmani, A., Fernandes, R. M., & Ghaemi, P. (2022). Anomalous Shiba states in topological iron-based superconductors. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.106.l201107 chicago: Ghazaryan, Areg, Ammar Kirmani, Rafael M. Fernandes, and Pouyan Ghaemi. “Anomalous Shiba States in Topological Iron-Based Superconductors.” Physical Review B. American Physical Society, 2022. https://doi.org/10.1103/physrevb.106.l201107. ieee: A. Ghazaryan, A. Kirmani, R. M. Fernandes, and P. Ghaemi, “Anomalous Shiba states in topological iron-based superconductors,” Physical Review B, vol. 106, no. 20. American Physical Society, 2022. ista: Ghazaryan A, Kirmani A, Fernandes RM, Ghaemi P. 2022. Anomalous Shiba states in topological iron-based superconductors. Physical Review B. 106(20), L201107. mla: Ghazaryan, Areg, et al. “Anomalous Shiba States in Topological Iron-Based Superconductors.” Physical Review B, vol. 106, no. 20, L201107, American Physical Society, 2022, doi:10.1103/physrevb.106.l201107. short: A. Ghazaryan, A. Kirmani, R.M. Fernandes, P. Ghaemi, Physical Review B 106 (2022). date_created: 2023-01-12T12:04:43Z date_published: 2022-11-15T00:00:00Z date_updated: 2023-08-04T08:55:31Z day: '15' department: - _id: MiLe doi: 10.1103/physrevb.106.l201107 external_id: arxiv: - '2207.12425' isi: - '000893171800001' intvolume: ' 106' isi: 1 issue: '20' language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.2207.12425' month: '11' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Anomalous Shiba states in topological iron-based superconductors type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 106 year: '2022' ... --- _id: '12150' abstract: - lang: eng text: Methods inspired from machine learning have recently attracted great interest in the computational study of quantum many-particle systems. So far, however, it has proven challenging to deal with microscopic models in which the total number of particles is not conserved. To address this issue, we propose a variant of neural network states, which we term neural coherent states. Taking the Fröhlich impurity model as a case study, we show that neural coherent states can learn the ground state of nonadditive systems very well. In particular, we recover exact diagonalization in all regimes tested and observe substantial improvement over the standard coherent state estimates in the most challenging intermediate-coupling regime. Our approach is generic and does not assume specific details of the system, suggesting wide applications. acknowledgement: 'We acknowledge fruitful discussions with G. Bighin, G. Fabiani, A. Ghazaryan, C. Lampert, and A. Volosniev at various stages of this work. W.R. acknowledges support through a DOC Fellowship of the Austrian Academy of Sciences and has received funding from the EU Horizon 2020 programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. M.L. and J.H.M. acknowledge support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON) and Synergy Grant No. 856538 (3D-MAGiC), respectively. This work is part of the Shell-NWO/FOMinitiative “Computational sciences for energy research” of Shell and Chemical Sciences, Earth and Life Sciences, Physical Sciences, FOM and STW. ' article_number: '155127' article_processing_charge: No article_type: original author: - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Johan H. full_name: Mentink, Johan H. last_name: Mentink citation: ama: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for nonadditive systems. Physical Review B. 2022;106(15). doi:10.1103/physrevb.106.155127 apa: Rzadkowski, W., Lemeshko, M., & Mentink, J. H. (2022). Artificial neural network states for nonadditive systems. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.106.155127 chicago: Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial Neural Network States for Nonadditive Systems.” Physical Review B. American Physical Society, 2022. https://doi.org/10.1103/physrevb.106.155127. ieee: W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network states for nonadditive systems,” Physical Review B, vol. 106, no. 15. American Physical Society, 2022. ista: Rzadkowski W, Lemeshko M, Mentink JH. 2022. Artificial neural network states for nonadditive systems. Physical Review B. 106(15), 155127. mla: Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Nonadditive Systems.” Physical Review B, vol. 106, no. 15, 155127, American Physical Society, 2022, doi:10.1103/physrevb.106.155127. short: W. Rzadkowski, M. Lemeshko, J.H. Mentink, Physical Review B 106 (2022). date_created: 2023-01-12T12:07:49Z date_published: 2022-10-15T00:00:00Z date_updated: 2023-08-04T09:01:48Z day: '15' department: - _id: MiLe doi: 10.1103/physrevb.106.155127 ec_funded: 1 external_id: arxiv: - '2105.15193' isi: - '000875189100005' intvolume: ' 106' isi: 1 issue: '15' language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.2105.15193' month: '10' oa: 1 oa_version: Preprint project: - _id: 05A235A0-7A3F-11EA-A408-12923DDC885E grant_number: '25681' name: Analytic and machine learning approaches to composite quantum impurities - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Artificial neural network states for nonadditive systems type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 106 year: '2022' ... --- _id: '12213' abstract: - lang: eng text: 'Motivated by properties-controlling potential of the strain, we investigate strain dependence of structure, electronic, and magnetic properties of Sr2IrO4 using complementary theoretical tools: ab-initio calculations, analytical approaches (rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid octahedra picture is not relevant. Second, we find fundamentally different behavior for compressive and tensile strain. One remarkable feature is the formation of two subsets of bond- and orbital-dependent carriers, a compass-like model, under compression. This originates from the strain-induced renormalization of the Ir-O-Ir superexchange and O on-site energy. We also show that under compressive (tensile) strain, Fermi surface becomes highly dispersive (relatively flat). Already at a tensile strain of 1.5%, we observe spectral weight redistribution, with the low-energy band acquiring almost purely singlet character. These results can be directly compared with future experiments.' acknowledgement: E.M.P. thanks Eugenio Paris, Thorsten Schmitt, Krzysztof Wohlfeld, and other coauthors for an inspiring previous collaboration23, and is grateful to Gang Cao, Ambrose Seo, and Jungho Kim for insightful discussions. R.R. acknowledges helpful discussion with Sanjeev Kumar and Manuel Richter. This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No 754411. C.C.C. acknowledges support from the U.S. National Science Foundation Award No. DMR-2142801. article_number: '90' article_processing_charge: No article_type: original author: - first_name: Ekaterina full_name: Paerschke, Ekaterina id: 8275014E-6063-11E9-9B7F-6338E6697425 last_name: Paerschke orcid: 0000-0003-0853-8182 - first_name: Wei-Chih full_name: Chen, Wei-Chih last_name: Chen - first_name: Rajyavardhan full_name: Ray, Rajyavardhan last_name: Ray - first_name: Cheng-Chien full_name: Chen, Cheng-Chien last_name: Chen citation: ama: Paerschke E, Chen W-C, Ray R, Chen C-C. Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 2022;7. doi:10.1038/s41535-022-00496-w apa: Paerschke, E., Chen, W.-C., Ray, R., & Chen, C.-C. (2022). Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain. Npj Quantum Materials. Springer Nature. https://doi.org/10.1038/s41535-022-00496-w chicago: Paerschke, Ekaterina, Wei-Chih Chen, Rajyavardhan Ray, and Cheng-Chien Chen. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.” Npj Quantum Materials. Springer Nature, 2022. https://doi.org/10.1038/s41535-022-00496-w. ieee: E. Paerschke, W.-C. Chen, R. Ray, and C.-C. Chen, “Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain,” npj Quantum Materials, vol. 7. Springer Nature, 2022. ista: Paerschke E, Chen W-C, Ray R, Chen C-C. 2022. Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 7, 90. mla: Paerschke, Ekaterina, et al. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.” Npj Quantum Materials, vol. 7, 90, Springer Nature, 2022, doi:10.1038/s41535-022-00496-w. short: E. Paerschke, W.-C. Chen, R. Ray, C.-C. Chen, Npj Quantum Materials 7 (2022). date_created: 2023-01-16T09:46:01Z date_published: 2022-09-10T00:00:00Z date_updated: 2023-08-04T09:23:43Z day: '10' ddc: - '530' department: - _id: MiLe doi: 10.1038/s41535-022-00496-w ec_funded: 1 external_id: isi: - '000852381200003' file: - access_level: open_access checksum: d93b477b5b95c0d1b8f9fef90a81f565 content_type: application/pdf creator: dernst date_created: 2023-01-27T07:59:27Z date_updated: 2023-01-27T07:59:27Z file_id: '12414' file_name: 2022_NPJ_Paerschke.pdf file_size: 1852598 relation: main_file success: 1 file_date_updated: 2023-01-27T07:59:27Z has_accepted_license: '1' intvolume: ' 7' isi: 1 keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: npj Quantum Materials publication_identifier: eissn: - 2397-4648 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: link: - relation: erratum url: https://doi.org/10.1038/s41535-022-00510-1 scopus_import: '1' status: public title: Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 7 year: '2022' ... --- _id: '12154' abstract: - lang: eng text: We review our theoretical results of the sound propagation in two-dimensional (2D) systems of ultracold fermionic and bosonic atoms. In the superfluid phase, characterized by the spontaneous symmetry breaking of the U(1) symmetry, there is the coexistence of first and second sound. In the case of weakly-interacting repulsive bosons, we model the recent measurements of the sound velocities of 39K atoms in 2D obtained in the weakly-interacting regime and around the Berezinskii–Kosterlitz–Thouless (BKT) superfluid-to-normal transition temperature. In particular, we perform a quite accurate computation of the superfluid density and show that it is reasonably consistent with the experimental results. For superfluid attractive fermions, we calculate the first and second sound velocities across the whole BCS-BEC crossover. In the low-temperature regime, we reproduce the recent measurements of first-sound speed with 6Li atoms. We also predict that there is mixing between sound modes only in the finite-temperature BEC regime. acknowledgement: "This research is partially supported by University of Padova, BIRD grant “Ultracold atoms\r\nin curved geometries”. KF is supported by Fondazione CARIPARO with a PhD fellowship. AT is\r\npartially supported by French National Research Agency ANR Grant Droplets N. ANR-19-CE30-0003-02. LS thanks Herwig Ott and Sandro Wimberger for their kind invitation to the\r\nInternational Workshop “Quantum Transport with ultracold atoms” (2022)." article_number: '2182' article_processing_charge: Yes article_type: original author: - first_name: Luca full_name: Salasnich, Luca last_name: Salasnich - first_name: Alberto full_name: Cappellaro, Alberto id: 9d13b3cb-30a2-11eb-80dc-f772505e8660 last_name: Cappellaro orcid: 0000-0001-6110-2359 - first_name: Koichiro full_name: Furutani, Koichiro last_name: Furutani - first_name: Andrea full_name: Tononi, Andrea last_name: Tononi - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 citation: ama: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. First and second sound in two-dimensional bosonic and fermionic superfluids. Symmetry. 2022;14(10). doi:10.3390/sym14102182 apa: Salasnich, L., Cappellaro, A., Furutani, K., Tononi, A., & Bighin, G. (2022). First and second sound in two-dimensional bosonic and fermionic superfluids. Symmetry. MDPI. https://doi.org/10.3390/sym14102182 chicago: Salasnich, Luca, Alberto Cappellaro, Koichiro Furutani, Andrea Tononi, and Giacomo Bighin. “First and Second Sound in Two-Dimensional Bosonic and Fermionic Superfluids.” Symmetry. MDPI, 2022. https://doi.org/10.3390/sym14102182. ieee: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, and G. Bighin, “First and second sound in two-dimensional bosonic and fermionic superfluids,” Symmetry, vol. 14, no. 10. MDPI, 2022. ista: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. 2022. First and second sound in two-dimensional bosonic and fermionic superfluids. Symmetry. 14(10), 2182. mla: Salasnich, Luca, et al. “First and Second Sound in Two-Dimensional Bosonic and Fermionic Superfluids.” Symmetry, vol. 14, no. 10, 2182, MDPI, 2022, doi:10.3390/sym14102182. short: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, G. Bighin, Symmetry 14 (2022). date_created: 2023-01-12T12:08:31Z date_published: 2022-10-17T00:00:00Z date_updated: 2023-08-09T10:13:17Z day: '17' ddc: - '530' department: - _id: MiLe doi: 10.3390/sym14102182 external_id: isi: - '000875039200001' file: - access_level: open_access checksum: 9b6bd0e484834dd76d7b26e3c5fba8bd content_type: application/pdf creator: dernst date_created: 2023-01-24T10:56:12Z date_updated: 2023-01-24T10:56:12Z file_id: '12361' file_name: 2022_Symmetry_Salsnich.pdf file_size: 843723 relation: main_file success: 1 file_date_updated: 2023-01-24T10:56:12Z has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '10' keyword: - Physics and Astronomy (miscellaneous) - General Mathematics - Chemistry (miscellaneous) - Computer Science (miscellaneous) language: - iso: eng month: '10' oa: 1 oa_version: Published Version publication: Symmetry publication_identifier: issn: - 2073-8994 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: First and second sound in two-dimensional bosonic and fermionic superfluids tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2022' ... --- _id: '10759' abstract: - lang: eng text: In this Thesis, I study composite quantum impurities with variational techniques, both inspired by machine learning as well as fully analytic. I supplement this with exploration of other applications of machine learning, in particular artificial neural networks, in many-body physics. In Chapters 3 and 4, I study quasiparticle systems with variational approach. I derive a Hamiltonian describing the angulon quasiparticle in the presence of a magnetic field. I apply analytic variational treatment to this Hamiltonian. Then, I introduce a variational approach for non-additive systems, based on artificial neural networks. I exemplify this approach on the example of the polaron quasiparticle (Fröhlich Hamiltonian). In Chapter 5, I continue using artificial neural networks, albeit in a different setting. I apply artificial neural networks to detect phases from snapshots of two types physical systems. Namely, I study Monte Carlo snapshots of multilayer classical spin models as well as molecular dynamics maps of colloidal systems. The main type of networks that I use here are convolutional neural networks, known for their applicability to image data. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 citation: ama: Rzadkowski W. Analytic and machine learning approaches to composite quantum impurities. 2022. doi:10.15479/at:ista:10759 apa: Rzadkowski, W. (2022). Analytic and machine learning approaches to composite quantum impurities. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:10759 chicago: Rzadkowski, Wojciech. “Analytic and Machine Learning Approaches to Composite Quantum Impurities.” Institute of Science and Technology Austria, 2022. https://doi.org/10.15479/at:ista:10759. ieee: W. Rzadkowski, “Analytic and machine learning approaches to composite quantum impurities,” Institute of Science and Technology Austria, 2022. ista: Rzadkowski W. 2022. Analytic and machine learning approaches to composite quantum impurities. Institute of Science and Technology Austria. mla: Rzadkowski, Wojciech. Analytic and Machine Learning Approaches to Composite Quantum Impurities. Institute of Science and Technology Austria, 2022, doi:10.15479/at:ista:10759. short: W. Rzadkowski, Analytic and Machine Learning Approaches to Composite Quantum Impurities, Institute of Science and Technology Austria, 2022. date_created: 2022-02-16T13:27:37Z date_published: 2022-02-21T00:00:00Z date_updated: 2024-02-28T13:01:59Z day: '21' ddc: - '530' degree_awarded: PhD department: - _id: GradSch - _id: MiLe doi: 10.15479/at:ista:10759 ec_funded: 1 file: - access_level: closed checksum: 0fc54ad1eaede879c665ac9b53c93e22 content_type: application/zip creator: wrzadkow date_created: 2022-02-21T13:58:16Z date_updated: 2022-02-22T07:20:12Z file_id: '10785' file_name: Rzadkowski_thesis_final_source.zip file_size: 17668233 relation: source_file - access_level: open_access checksum: 22d2d7af37ca31f6b1730c26cac7bced content_type: application/pdf creator: wrzadkow date_created: 2022-02-21T14:02:54Z date_updated: 2022-02-21T14:02:54Z file_id: '10786' file_name: Rzadkowski_thesis_final.pdf file_size: 13307331 relation: main_file success: 1 file_date_updated: 2022-02-22T07:20:12Z has_accepted_license: '1' language: - iso: eng month: '02' oa: 1 oa_version: Published Version page: '120' project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '10762' relation: part_of_dissertation status: public - id: '8644' relation: part_of_dissertation status: public - id: '7956' relation: part_of_dissertation status: public - id: '415' relation: part_of_dissertation status: public status: public supervisor: - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 title: Analytic and machine learning approaches to composite quantum impurities type: dissertation user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2022' ... --- _id: '10585' abstract: - lang: eng text: Recently it was shown that anyons on the two-sphere naturally arise from a system of molecular impurities exchanging angular momentum with a many-particle bath (Phys. Rev. Lett. 126, 015301 (2021)). Here we further advance this approach and rigorously demonstrate that in the experimentally realized regime the lowest spectrum of two linear molecules immersed in superfluid helium corresponds to the spectrum of two anyons on the sphere. We develop the formalism within the framework of the recently experimentally observed angulon quasiparticle acknowledgement: D. Lundholm acknowledges financial support from the Göran Gustafsson Foundation (grant no. 1804). article_number: '106' article_processing_charge: Yes article_type: original author: - first_name: Morris full_name: Brooks, Morris id: B7ECF9FC-AA38-11E9-AC9A-0930E6697425 last_name: Brooks orcid: 0000-0002-6249-0928 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Douglas full_name: Lundholm, Douglas last_name: Lundholm - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 citation: ama: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. Emergence of anyons on the two-sphere in molecular impurities. Atoms. 2021;9(4). doi:10.3390/atoms9040106 apa: Brooks, M., Lemeshko, M., Lundholm, D., & Yakaboylu, E. (2021). Emergence of anyons on the two-sphere in molecular impurities. Atoms. MDPI. https://doi.org/10.3390/atoms9040106 chicago: Brooks, Morris, Mikhail Lemeshko, Douglas Lundholm, and Enderalp Yakaboylu. “Emergence of Anyons on the Two-Sphere in Molecular Impurities.” Atoms. MDPI, 2021. https://doi.org/10.3390/atoms9040106. ieee: M. Brooks, M. Lemeshko, D. Lundholm, and E. Yakaboylu, “Emergence of anyons on the two-sphere in molecular impurities,” Atoms, vol. 9, no. 4. MDPI, 2021. ista: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. 2021. Emergence of anyons on the two-sphere in molecular impurities. Atoms. 9(4), 106. mla: Brooks, Morris, et al. “Emergence of Anyons on the Two-Sphere in Molecular Impurities.” Atoms, vol. 9, no. 4, 106, MDPI, 2021, doi:10.3390/atoms9040106. short: M. Brooks, M. Lemeshko, D. Lundholm, E. Yakaboylu, Atoms 9 (2021). date_created: 2022-01-02T23:01:33Z date_published: 2021-12-02T00:00:00Z date_updated: 2023-06-15T14:51:49Z day: '02' ddc: - '530' department: - _id: MiLe - _id: RoSe doi: 10.3390/atoms9040106 external_id: arxiv: - '2108.06966' file: - access_level: open_access checksum: d0e44b95f36c9e06724f66832af0f8c3 content_type: application/pdf creator: alisjak date_created: 2022-01-03T10:15:05Z date_updated: 2022-01-03T10:15:05Z file_id: '10592' file_name: 2021_Atoms_Brooks.pdf file_size: 303070 relation: main_file success: 1 file_date_updated: 2022-01-03T10:15:05Z has_accepted_license: '1' intvolume: ' 9' issue: '4' keyword: - anyons - quasiparticles - Quantum Hall Effect - topological states of matter language: - iso: eng month: '12' oa: 1 oa_version: Published Version publication: Atoms publication_identifier: eissn: - 2218-2004 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Emergence of anyons on the two-sphere in molecular impurities tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 9 year: '2021' ... --- _id: '8816' abstract: - lang: eng text: Area-dependent quantum field theory is a modification of two-dimensional topological quantum field theory, where one equips each connected component of a bordism with a positive real number—interpreted as area—which behaves additively under glueing. As opposed to topological theories, in area-dependent theories the state spaces can be infinite-dimensional. We introduce the notion of regularised Frobenius algebras in Hilbert spaces and show that area-dependent theories are in one-to-one correspondence to commutative regularised Frobenius algebras. We also provide a state sum construction for area-dependent theories. Our main example is two-dimensional Yang–Mills theory with compact gauge group, which we treat in detail. acknowledgement: The authors thank Yuki Arano, Nils Carqueville, Alexei Davydov, Reiner Lauterbach, Pau Enrique Moliner, Chris Heunen, André Henriques, Ehud Meir, Catherine Meusburger, Gregor Schaumann, Richard Szabo and Stefan Wagner for helpful discussions and comments. We also thank the referees for their detailed comments which significantly improved the exposition of this paper. LS is supported by the DFG Research Training Group 1670 “Mathematics Inspired by String Theory and Quantum Field Theory”. Open access funding provided by Institute of Science and Technology (IST Austria). article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Ingo full_name: Runkel, Ingo last_name: Runkel - first_name: Lorant full_name: Szegedy, Lorant id: 7943226E-220E-11EA-94C7-D59F3DDC885E last_name: Szegedy orcid: 0000-0003-2834-5054 citation: ama: Runkel I, Szegedy L. Area-dependent quantum field theory. Communications in Mathematical Physics. 2021;381(1):83–117. doi:10.1007/s00220-020-03902-1 apa: Runkel, I., & Szegedy, L. (2021). Area-dependent quantum field theory. Communications in Mathematical Physics. Springer Nature. https://doi.org/10.1007/s00220-020-03902-1 chicago: Runkel, Ingo, and Lorant Szegedy. “Area-Dependent Quantum Field Theory.” Communications in Mathematical Physics. Springer Nature, 2021. https://doi.org/10.1007/s00220-020-03902-1. ieee: I. Runkel and L. Szegedy, “Area-dependent quantum field theory,” Communications in Mathematical Physics, vol. 381, no. 1. Springer Nature, pp. 83–117, 2021. ista: Runkel I, Szegedy L. 2021. Area-dependent quantum field theory. Communications in Mathematical Physics. 381(1), 83–117. mla: Runkel, Ingo, and Lorant Szegedy. “Area-Dependent Quantum Field Theory.” Communications in Mathematical Physics, vol. 381, no. 1, Springer Nature, 2021, pp. 83–117, doi:10.1007/s00220-020-03902-1. short: I. Runkel, L. Szegedy, Communications in Mathematical Physics 381 (2021) 83–117. date_created: 2020-11-29T23:01:17Z date_published: 2021-01-01T00:00:00Z date_updated: 2023-08-04T11:13:35Z day: '01' ddc: - '510' department: - _id: MiLe doi: 10.1007/s00220-020-03902-1 external_id: isi: - '000591139000001' file: - access_level: open_access checksum: 6f451f9c2b74bedbc30cf884a3e02670 content_type: application/pdf creator: dernst date_created: 2021-02-03T15:00:30Z date_updated: 2021-02-03T15:00:30Z file_id: '9081' file_name: 2021_CommMathPhys_Runkel.pdf file_size: 790526 relation: main_file success: 1 file_date_updated: 2021-02-03T15:00:30Z has_accepted_license: '1' intvolume: ' 381' isi: 1 issue: '1' language: - iso: eng month: '01' oa: 1 oa_version: Published Version page: 83–117 project: - _id: B67AFEDC-15C9-11EA-A837-991A96BB2854 name: IST Austria Open Access Fund publication: Communications in Mathematical Physics publication_identifier: eissn: - '14320916' issn: - '00103616' publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Area-dependent quantum field theory tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 381 year: '2021' ... --- _id: '9005' abstract: - lang: eng text: Studies on the experimental realization of two-dimensional anyons in terms of quasiparticles have been restricted, so far, to only anyons on the plane. It is known, however, that the geometry and topology of space can have significant effects on quantum statistics for particles moving on it. Here, we have undertaken the first step toward realizing the emerging fractional statistics for particles restricted to move on the sphere instead of on the plane. We show that such a model arises naturally in the context of quantum impurity problems. In particular, we demonstrate a setup in which the lowest-energy spectrum of two linear bosonic or fermionic molecules immersed in a quantum many-particle environment can coincide with the anyonic spectrum on the sphere. This paves the way toward the experimental realization of anyons on the sphere using molecular impurities. Furthermore, since a change in the alignment of the molecules corresponds to the exchange of the particles on the sphere, such a realization reveals a novel type of exclusion principle for molecular impurities, which could also be of use as a powerful technique to measure the statistics parameter. Finally, our approach opens up a simple numerical route to investigate the spectra of many anyons on the sphere. Accordingly, we present the spectrum of two anyons on the sphere in the presence of a Dirac monopole field. acknowledgement: "We are grateful to A. Ghazaryan for valuable discussions and also thank the anonymous referees for comments. D.L. acknowledges financial support from the G¨oran Gustafsson Foundation (grant no. 1804) and LMU Munich. M.L. gratefully acknowledges financial support\r\nby the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreements No 801770)." article_number: '015301' article_processing_charge: No article_type: original author: - first_name: Morris full_name: Brooks, Morris id: B7ECF9FC-AA38-11E9-AC9A-0930E6697425 last_name: Brooks orcid: 0000-0002-6249-0928 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: D. full_name: Lundholm, D. last_name: Lundholm - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 citation: ama: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. Molecular impurities as a realization of anyons on the two-sphere. Physical Review Letters. 2021;126(1). doi:10.1103/PhysRevLett.126.015301 apa: Brooks, M., Lemeshko, M., Lundholm, D., & Yakaboylu, E. (2021). Molecular impurities as a realization of anyons on the two-sphere. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.126.015301 chicago: Brooks, Morris, Mikhail Lemeshko, D. Lundholm, and Enderalp Yakaboylu. “Molecular Impurities as a Realization of Anyons on the Two-Sphere.” Physical Review Letters. American Physical Society, 2021. https://doi.org/10.1103/PhysRevLett.126.015301. ieee: M. Brooks, M. Lemeshko, D. Lundholm, and E. Yakaboylu, “Molecular impurities as a realization of anyons on the two-sphere,” Physical Review Letters, vol. 126, no. 1. American Physical Society, 2021. ista: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. 2021. Molecular impurities as a realization of anyons on the two-sphere. Physical Review Letters. 126(1), 015301. mla: Brooks, Morris, et al. “Molecular Impurities as a Realization of Anyons on the Two-Sphere.” Physical Review Letters, vol. 126, no. 1, 015301, American Physical Society, 2021, doi:10.1103/PhysRevLett.126.015301. short: M. Brooks, M. Lemeshko, D. Lundholm, E. Yakaboylu, Physical Review Letters 126 (2021). date_created: 2021-01-17T23:01:10Z date_published: 2021-01-08T00:00:00Z date_updated: 2023-08-07T13:32:10Z day: '08' department: - _id: MiLe - _id: RoSe doi: 10.1103/PhysRevLett.126.015301 ec_funded: 1 external_id: arxiv: - '2009.05948' isi: - '000606325000003' intvolume: ' 126' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2009.05948 month: '01' oa: 1 oa_version: Preprint project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Letters publication_identifier: eissn: - '10797114' issn: - '00319007' publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/dancing-molecules-and-two-dimensional-particles/ record: - id: '12390' relation: dissertation_contains status: public scopus_import: '1' status: public title: Molecular impurities as a realization of anyons on the two-sphere type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 126 year: '2021' ... --- _id: '9093' abstract: - lang: eng text: We employ the Gross-Pitaevskii equation to study acoustic emission generated in a uniform Bose gas by a static impurity. The impurity excites a sound-wave packet, which propagates through the gas. We calculate the shape of this wave packet in the limit of long wave lengths, and argue that it is possible to extract properties of the impurity by observing this shape. We illustrate here this possibility for a Bose gas with a trapped impurity atom -- an example of a relevant experimental setup. Presented results are general for all one-dimensional systems described by the nonlinear Schrödinger equation and can also be used in nonatomic systems, e.g., to analyze light propagation in nonlinear optical media. Finally, we calculate the shape of the sound-wave packet for a three-dimensional Bose gas assuming a spherically symmetric perturbation. acknowledgement: "We acknowledge fruitful discussions with Dr. Simos Mistakidis regarding beyond mean-field\r\neffects in our system. We also thank Prof. Maxim Olshanii for valuable suggestions to improve\r\nthe manuscript.O.V.M acknowledges the support from the National Science Foundation\r\nthrough grants No. PHY-1402249, No. PHY-1607221, and No. PHY-1912542 and the\r\nBinational (US-Israel) Science Foundation through grant No. 2015616, as well as by the Israel\r\nScience Foundation (grant No. 1287/17) and from the German Aeronautics and Space Administration\r\n(DLR) through Grant No. 50WM1957. This work has also received funding from\r\nthe DFG Project No.413495248 [VO 2437/1-1] and European Union’s Horizon 2020 research\r\nand innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411\r\n(A. G. V.)" article_number: '025' article_processing_charge: No article_type: original author: - first_name: Oleksandr full_name: Marchukov, Oleksandr last_name: Marchukov - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Marchukov O, Volosniev A. Shape of a sound wave in a weakly-perturbed Bose gas. SciPost Physics. 2021;10(2). doi:10.21468/scipostphys.10.2.025 apa: Marchukov, O., & Volosniev, A. (2021). Shape of a sound wave in a weakly-perturbed Bose gas. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.10.2.025 chicago: Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a Weakly-Perturbed Bose Gas.” SciPost Physics. SciPost Foundation, 2021. https://doi.org/10.21468/scipostphys.10.2.025. ieee: O. Marchukov and A. Volosniev, “Shape of a sound wave in a weakly-perturbed Bose gas,” SciPost Physics, vol. 10, no. 2. SciPost Foundation, 2021. ista: Marchukov O, Volosniev A. 2021. Shape of a sound wave in a weakly-perturbed Bose gas. SciPost Physics. 10(2), 025. mla: Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a Weakly-Perturbed Bose Gas.” SciPost Physics, vol. 10, no. 2, 025, SciPost Foundation, 2021, doi:10.21468/scipostphys.10.2.025. short: O. Marchukov, A. Volosniev, SciPost Physics 10 (2021). date_created: 2021-02-04T12:39:24Z date_published: 2021-02-03T00:00:00Z date_updated: 2023-08-07T13:39:37Z day: '03' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphys.10.2.025 ec_funded: 1 external_id: arxiv: - '2004.08075' isi: - '000646783100027' file: - access_level: open_access checksum: 9fd614b7ab49999e7267874df2582f7e content_type: application/pdf creator: dernst date_created: 2021-02-09T07:06:22Z date_updated: 2021-02-09T07:06:22Z file_id: '9105' file_name: 2021_SciPostPhysics_Marchukov.pdf file_size: 666512 relation: main_file success: 1 file_date_updated: 2021-02-09T07:06:22Z has_accepted_license: '1' intvolume: ' 10' isi: 1 issue: '2' language: - iso: eng month: '02' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: SciPost Physics publication_identifier: issn: - 2542-4653 publication_status: published publisher: SciPost Foundation quality_controlled: '1' status: public title: Shape of a sound wave in a weakly-perturbed Bose gas tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 10 year: '2021' ... --- _id: '9606' abstract: - lang: eng text: Sound propagation is a macroscopic manifestation of the interplay between the equilibrium thermodynamics and the dynamical transport properties of fluids. Here, for a two-dimensional system of ultracold fermions, we calculate the first and second sound velocities across the whole BCS-BEC crossover, and we analyze the system response to an external perturbation. In the low-temperature regime we reproduce the recent measurements [Phys. Rev. Lett. 124, 240403 (2020)] of the first sound velocity, which, due to the decoupling of density and entropy fluctuations, is the sole mode excited by a density probe. Conversely, a heat perturbation excites only the second sound, which, being sensitive to the superfluid depletion, vanishes in the deep BCS regime and jumps discontinuously to zero at the Berezinskii-Kosterlitz-Thouless superfluid transition. A mixing between the modes occurs only in the finite-temperature BEC regime, where our theory converges to the purely bosonic results. acknowledgement: "G.B. acknowledges support from the Austrian Science Fund (FWF), under Project No. M2641-N27. This work was\r\npartially supported by the University of Padua, BIRD project “Superfluid properties of Fermi gases in optical potentials.”\r\nThe authors thank Miki Ota, Tomoki Ozawa, Sandro Stringari, Tilman Enss, Hauke Biss, Henning Moritz, and Nicolò Defenu for fruitful discussions. The authors thank Henning Moritz and Markus Bohlen for providing their experimental\r\ndata." article_number: L061303 article_processing_charge: No article_type: letter_note author: - first_name: A. full_name: Tononi, A. last_name: Tononi - first_name: Alberto full_name: Cappellaro, Alberto id: 9d13b3cb-30a2-11eb-80dc-f772505e8660 last_name: Cappellaro orcid: 0000-0001-6110-2359 - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: L. full_name: Salasnich, L. last_name: Salasnich citation: ama: Tononi A, Cappellaro A, Bighin G, Salasnich L. Propagation of first and second sound in a two-dimensional Fermi superfluid. Physical Review A. 2021;103(6). doi:10.1103/PhysRevA.103.L061303 apa: Tononi, A., Cappellaro, A., Bighin, G., & Salasnich, L. (2021). Propagation of first and second sound in a two-dimensional Fermi superfluid. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.103.L061303 chicago: Tononi, A., Alberto Cappellaro, Giacomo Bighin, and L. Salasnich. “Propagation of First and Second Sound in a Two-Dimensional Fermi Superfluid.” Physical Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.103.L061303. ieee: A. Tononi, A. Cappellaro, G. Bighin, and L. Salasnich, “Propagation of first and second sound in a two-dimensional Fermi superfluid,” Physical Review A, vol. 103, no. 6. American Physical Society, 2021. ista: Tononi A, Cappellaro A, Bighin G, Salasnich L. 2021. Propagation of first and second sound in a two-dimensional Fermi superfluid. Physical Review A. 103(6), L061303. mla: Tononi, A., et al. “Propagation of First and Second Sound in a Two-Dimensional Fermi Superfluid.” Physical Review A, vol. 103, no. 6, L061303, American Physical Society, 2021, doi:10.1103/PhysRevA.103.L061303. short: A. Tononi, A. Cappellaro, G. Bighin, L. Salasnich, Physical Review A 103 (2021). date_created: 2021-06-27T22:01:49Z date_published: 2021-06-01T00:00:00Z date_updated: 2023-08-10T13:37:25Z day: '01' department: - _id: MiLe doi: 10.1103/PhysRevA.103.L061303 external_id: arxiv: - '2009.06491' isi: - '000662296700014' intvolume: ' 103' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2009.06491 month: '06' oa: 1 oa_version: Preprint publication: Physical Review A publication_identifier: eissn: - '24699934' issn: - '24699926' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Propagation of first and second sound in a two-dimensional Fermi superfluid type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 103 year: '2021' ... --- _id: '9679' abstract: - lang: eng text: The relative motion of three impenetrable particles on a ring, in our case two identical fermions and one impurity, is isomorphic to a triangular quantum billiard. Depending on the ratio κ of the impurity and fermion masses, the billiards can be integrable or non-integrable (also referred to in the main text as chaotic). To set the stage, we first investigate the energy level distributions of the billiards as a function of 1/κ ∈ [0, 1] and find no evidence of integrable cases beyond the limiting values 1/κ = 1 and 1/κ = 0. Then, we use machine learning tools to analyze properties of probability distributions of individual quantum states. We find that convolutional neural networks can correctly classify integrable and non-integrable states. The decisive features of the wave functions are the normalization and a large number of zero elements, corresponding to the existence of a nodal line. The network achieves typical accuracies of 97%, suggesting that machine learning tools can be used to analyze and classify the morphology of probability densities obtained in theory or experiment. acknowledgement: We thank Aidan Tracy for his input during the initial stages of this project. We thank Nathan Harshman, Achim Richter, Wojciech Rzadkowski, and Dane Hudson Smith for helpful discussions and comments on the manuscript. This work has been supported by European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411 (AGV); by the German Aeronautics and Space Administration (DLR) through Grant No. 50 WM 1957 (OVM); by the Deutsche Forschungsgemeinschaft through Project VO 2437/1-1 (Project No. 413495248) (AGV and HWH); by the Deutsche Forschungsgemeinschaft through Collaborative Research Center SFB 1245 (Project No. 279384907) and by the Bundesministerium für Bildung und Forschung under Contract 05P18RDFN1 (HWH). HWH also thanks the ECT* for hospitality during the workshop 'Universal physics in Many-Body Quantum Systems—From Atoms to Quarks'. This infrastructure is part of a project that has received funding from the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 824093. We acknowledge support by the Deutsche Forschungsgemeinschaft and the Open Access Publishing Fund of Technische Universität Darmstadt. article_number: '065009' article_processing_charge: Yes article_type: original author: - first_name: David full_name: Huber, David last_name: Huber - first_name: Oleksandr V. full_name: Marchukov, Oleksandr V. last_name: Marchukov - first_name: Hans Werner full_name: Hammer, Hans Werner last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Huber D, Marchukov OV, Hammer HW, Volosniev A. Morphology of three-body quantum states from machine learning. New Journal of Physics. 2021;23(6). doi:10.1088/1367-2630/ac0576 apa: Huber, D., Marchukov, O. V., Hammer, H. W., & Volosniev, A. (2021). Morphology of three-body quantum states from machine learning. New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/ac0576 chicago: Huber, David, Oleksandr V. Marchukov, Hans Werner Hammer, and Artem Volosniev. “Morphology of Three-Body Quantum States from Machine Learning.” New Journal of Physics. IOP Publishing, 2021. https://doi.org/10.1088/1367-2630/ac0576. ieee: D. Huber, O. V. Marchukov, H. W. Hammer, and A. Volosniev, “Morphology of three-body quantum states from machine learning,” New Journal of Physics, vol. 23, no. 6. IOP Publishing, 2021. ista: Huber D, Marchukov OV, Hammer HW, Volosniev A. 2021. Morphology of three-body quantum states from machine learning. New Journal of Physics. 23(6), 065009. mla: Huber, David, et al. “Morphology of Three-Body Quantum States from Machine Learning.” New Journal of Physics, vol. 23, no. 6, 065009, IOP Publishing, 2021, doi:10.1088/1367-2630/ac0576. short: D. Huber, O.V. Marchukov, H.W. Hammer, A. Volosniev, New Journal of Physics 23 (2021). date_created: 2021-07-18T22:01:22Z date_published: 2021-06-23T00:00:00Z date_updated: 2023-08-10T13:58:09Z day: '23' ddc: - '530' department: - _id: MiLe doi: 10.1088/1367-2630/ac0576 ec_funded: 1 external_id: arxiv: - '2102.04961' isi: - '000664736300001' file: - access_level: open_access checksum: e39164ce7ea228d287cf8924e1a0f9fe content_type: application/pdf creator: cziletti date_created: 2021-07-19T11:47:16Z date_updated: 2021-07-19T11:47:16Z file_id: '9690' file_name: 2021_NewJPhys_Huber.pdf file_size: 3868445 relation: main_file success: 1 file_date_updated: 2021-07-19T11:47:16Z has_accepted_license: '1' intvolume: ' 23' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: New Journal of Physics publication_identifier: eissn: - '13672630' publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Morphology of three-body quantum states from machine learning tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 23 year: '2021' ... --- _id: '9770' abstract: - lang: eng text: We study an effective one-dimensional quantum model that includes friction and spin-orbit coupling (SOC), and show that the model exhibits spin polarization when both terms are finite. Most important, strong spin polarization can be observed even for moderate SOC, provided that the friction is strong. Our findings might help to explain the pronounced effect of chirality on spin distribution and transport in chiral molecules. In particular, our model implies static magnetic properties of a chiral molecule, which lead to Shiba-like states when a molecule is placed on a superconductor, in accordance with recent experimental data. acknowledgement: "We thank Rafael Barfknecht for useful discussions. This work has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (A.G.\r\nand A.G.V.). M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). Y.P. and O.M. acknowledge funding from the Nidersachsen Ministry of Science and Culture, and from the\r\nAcademia Sinica Research Program. O.M. is thankful for support through the Harry de Jur Chair in Applied Science." article_number: '024430' article_processing_charge: No article_type: original author: - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Hen full_name: Alpern, Hen last_name: Alpern - first_name: Yossi full_name: Paltiel, Yossi last_name: Paltiel - first_name: Oded full_name: Millo, Oded last_name: Millo - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 citation: ama: Volosniev A, Alpern H, Paltiel Y, Millo O, Lemeshko M, Ghazaryan A. Interplay between friction and spin-orbit coupling as a source of spin polarization. Physical Review B. 2021;104(2). doi:10.1103/physrevb.104.024430 apa: Volosniev, A., Alpern, H., Paltiel, Y., Millo, O., Lemeshko, M., & Ghazaryan, A. (2021). Interplay between friction and spin-orbit coupling as a source of spin polarization. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.104.024430 chicago: Volosniev, Artem, Hen Alpern, Yossi Paltiel, Oded Millo, Mikhail Lemeshko, and Areg Ghazaryan. “Interplay between Friction and Spin-Orbit Coupling as a Source of Spin Polarization.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/physrevb.104.024430. ieee: A. Volosniev, H. Alpern, Y. Paltiel, O. Millo, M. Lemeshko, and A. Ghazaryan, “Interplay between friction and spin-orbit coupling as a source of spin polarization,” Physical Review B, vol. 104, no. 2. American Physical Society, 2021. ista: Volosniev A, Alpern H, Paltiel Y, Millo O, Lemeshko M, Ghazaryan A. 2021. Interplay between friction and spin-orbit coupling as a source of spin polarization. Physical Review B. 104(2), 024430. mla: Volosniev, Artem, et al. “Interplay between Friction and Spin-Orbit Coupling as a Source of Spin Polarization.” Physical Review B, vol. 104, no. 2, 024430, American Physical Society, 2021, doi:10.1103/physrevb.104.024430. short: A. Volosniev, H. Alpern, Y. Paltiel, O. Millo, M. Lemeshko, A. Ghazaryan, Physical Review B 104 (2021). date_created: 2021-08-04T15:05:32Z date_published: 2021-07-01T00:00:00Z date_updated: 2023-08-10T14:27:07Z day: '01' department: - _id: MiLe doi: 10.1103/physrevb.104.024430 ec_funded: 1 external_id: arxiv: - '2101.05173' isi: - '000678780800003' intvolume: ' 104' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2101.05173 month: '07' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Interplay between friction and spin-orbit coupling as a source of spin polarization type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 104 year: '2021' ... --- _id: '9769' abstract: - lang: eng text: A few years ago, flow equations were introduced as a technique for calculating the ground-state energies of cold Bose gases with and without impurities. In this paper, we extend this approach to compute observables other than the energy. As an example, we calculate the densities, and phase fluctuations of one-dimensional Bose gases with one and two impurities. For a single mobile impurity, we use flow equations to validate the mean-field results obtained upon the Lee-Low-Pines transformation. We show that the mean-field approximation is accurate for all values of the boson-impurity interaction strength as long as the phase coherence length is much larger than the healing length of the condensate. For two static impurities, we calculate impurity-impurity interactions induced by the Bose gas. We find that leading order perturbation theory fails when boson-impurity interactions are stronger than boson-boson interactions. The mean-field approximation reproduces the flow equation results for all values of the boson-impurity interaction strength as long as boson-boson interactions are weak. acknowledgement: We thank Matthias Heinz and Volker Karle for helpful comments on the manuscript; Zoran Ristivojevic for useful correspondence regarding mean-field calculations of induced impurity-impurity interactions; Fabian Grusdt for sharing with us the data for the densities presented in Ref. [14]. This work has received funding from the DFG Project No. 413495248 [VO 2437/1-1] (F. B., H.-W. H., A. G. V.) and European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (A. G. V.). M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). H.-W.H. thanks the ECT* for hospitality during the workshop “Universal physics in Many-Body Quantum Systems – From Atoms to Quarks". This infrastructure is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 824093. H.-W.H. was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 279384907 - SFB 1245. article_number: '008' article_processing_charge: Yes article_type: original author: - first_name: Fabian full_name: Brauneis, Fabian last_name: Brauneis - first_name: Hans-Werner full_name: Hammer, Hans-Werner last_name: Hammer - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: 'Brauneis F, Hammer H-W, Lemeshko M, Volosniev A. Impurities in a one-dimensional Bose gas: The flow equation approach. SciPost Physics. 2021;11(1). doi:10.21468/scipostphys.11.1.008' apa: 'Brauneis, F., Hammer, H.-W., Lemeshko, M., & Volosniev, A. (2021). Impurities in a one-dimensional Bose gas: The flow equation approach. SciPost Physics. SciPost. https://doi.org/10.21468/scipostphys.11.1.008' chicago: 'Brauneis, Fabian, Hans-Werner Hammer, Mikhail Lemeshko, and Artem Volosniev. “Impurities in a One-Dimensional Bose Gas: The Flow Equation Approach.” SciPost Physics. SciPost, 2021. https://doi.org/10.21468/scipostphys.11.1.008.' ieee: 'F. Brauneis, H.-W. Hammer, M. Lemeshko, and A. Volosniev, “Impurities in a one-dimensional Bose gas: The flow equation approach,” SciPost Physics, vol. 11, no. 1. SciPost, 2021.' ista: 'Brauneis F, Hammer H-W, Lemeshko M, Volosniev A. 2021. Impurities in a one-dimensional Bose gas: The flow equation approach. SciPost Physics. 11(1), 008.' mla: 'Brauneis, Fabian, et al. “Impurities in a One-Dimensional Bose Gas: The Flow Equation Approach.” SciPost Physics, vol. 11, no. 1, 008, SciPost, 2021, doi:10.21468/scipostphys.11.1.008.' short: F. Brauneis, H.-W. Hammer, M. Lemeshko, A. Volosniev, SciPost Physics 11 (2021). date_created: 2021-08-04T15:00:55Z date_published: 2021-07-13T00:00:00Z date_updated: 2023-08-11T10:25:44Z day: '13' ddc: - '530' department: - _id: MiLe doi: 10.21468/scipostphys.11.1.008 ec_funded: 1 external_id: arxiv: - '2101.10958' isi: - '000680039500013' file: - access_level: open_access checksum: eaa847346b1a023d97bbb291779610ed content_type: application/pdf creator: asandaue date_created: 2021-08-10T11:44:59Z date_updated: 2021-08-10T11:44:59Z file_id: '9875' file_name: 2021_SciPostPhysics_Brauneis.pdf file_size: 1085300 relation: main_file success: 1 file_date_updated: 2021-08-10T11:44:59Z has_accepted_license: '1' intvolume: ' 11' isi: 1 issue: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: SciPost Physics publication_identifier: eissn: - 2542-4653 publication_status: published publisher: SciPost quality_controlled: '1' scopus_import: '1' status: public title: 'Impurities in a one-dimensional Bose gas: The flow equation approach' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 11 year: '2021' ... --- _id: '9903' abstract: - lang: eng text: Eigenstate thermalization in quantum many-body systems implies that eigenstates at high energy are similar to random vectors. Identifying systems where at least some eigenstates are nonthermal is an outstanding question. In this Letter we show that interacting quantum models that have a nullspace—a degenerate subspace of eigenstates at zero energy (zero modes), which corresponds to infinite temperature, provide a route to nonthermal eigenstates. We analytically show the existence of a zero mode which can be represented as a matrix product state for a certain class of local Hamiltonians. In the more general case we use a subspace disentangling algorithm to generate an orthogonal basis of zero modes characterized by increasing entanglement entropy. We show evidence for an area-law entanglement scaling of the least-entangled zero mode in the broad parameter regime, leading to a conjecture that all local Hamiltonians with the nullspace feature zero modes with area-law entanglement scaling and, as such, break the strong thermalization hypothesis. Finally, we find zero modes in constrained models and propose a setup for observing their experimental signatures. acknowledgement: "We acknowledge useful discussions with V. Gritsev and A. Garkun and suggestions on implementation of the\r\nPPXPP model by D. Bluvstein. A. M. and M. S. were supported by the European Research Council (ERC) under\r\nthe European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899)" article_number: '060602' article_processing_charge: Yes (in subscription journal) article_type: letter_note author: - first_name: Volker full_name: Karle, Volker id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425 last_name: Karle orcid: 0000-0002-6963-0129 - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Alexios full_name: Michailidis, Alexios id: 36EBAD38-F248-11E8-B48F-1D18A9856A87 last_name: Michailidis orcid: 0000-0002-8443-1064 citation: ama: Karle V, Serbyn M, Michailidis A. Area-law entangled eigenstates from nullspaces of local Hamiltonians. Physical Review Letters. 2021;127(6). doi:10.1103/physrevlett.127.060602 apa: Karle, V., Serbyn, M., & Michailidis, A. (2021). Area-law entangled eigenstates from nullspaces of local Hamiltonians. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.127.060602 chicago: Karle, Volker, Maksym Serbyn, and Alexios Michailidis. “Area-Law Entangled Eigenstates from Nullspaces of Local Hamiltonians.” Physical Review Letters. American Physical Society, 2021. https://doi.org/10.1103/physrevlett.127.060602. ieee: V. Karle, M. Serbyn, and A. Michailidis, “Area-law entangled eigenstates from nullspaces of local Hamiltonians,” Physical Review Letters, vol. 127, no. 6. American Physical Society, 2021. ista: Karle V, Serbyn M, Michailidis A. 2021. Area-law entangled eigenstates from nullspaces of local Hamiltonians. Physical Review Letters. 127(6), 060602. mla: Karle, Volker, et al. “Area-Law Entangled Eigenstates from Nullspaces of Local Hamiltonians.” Physical Review Letters, vol. 127, no. 6, 060602, American Physical Society, 2021, doi:10.1103/physrevlett.127.060602. short: V. Karle, M. Serbyn, A. Michailidis, Physical Review Letters 127 (2021). date_created: 2021-08-13T09:27:39Z date_published: 2021-08-06T00:00:00Z date_updated: 2023-08-11T10:43:27Z day: '06' ddc: - '539' department: - _id: MaSe - _id: GradSch - _id: MiLe doi: 10.1103/physrevlett.127.060602 ec_funded: 1 external_id: arxiv: - '2102.13633' isi: - '000684276000002' file: - access_level: open_access checksum: 51218f302dcef99d90d1209809fcc874 content_type: application/pdf creator: mserbyn date_created: 2021-08-13T09:28:08Z date_updated: 2021-08-13T09:28:08Z file_id: '9904' file_name: PhysRevLett.127.060602_SOM.pdf file_size: 5064231 relation: main_file success: 1 file_date_updated: 2021-08-13T09:28:08Z has_accepted_license: '1' intvolume: ' 127' isi: 1 issue: '6' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 23841C26-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '850899' name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control' publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Area-law entangled eigenstates from nullspaces of local Hamiltonians tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 127 year: '2021' ... --- _id: '10025' abstract: - lang: eng text: Ferromagnetism is most common in transition metal compounds but may also arise in low-density two-dimensional electron systems, with signatures observed in silicon, III-V semiconductor systems, and graphene moiré heterostructures. Here we show that gate-tuned van Hove singularities in rhombohedral trilayer graphene drive the spontaneous ferromagnetic polarization of the electron system into one or more spin- and valley flavors. Using capacitance measurements on graphite-gated van der Waals heterostructures, we find a cascade of density- and electronic displacement field tuned phase transitions marked by negative electronic compressibility. The transitions define the boundaries between phases where quantum oscillations have either four-fold, two-fold, or one-fold degeneracy, associated with a spin and valley degenerate normal metal, spin-polarized `half-metal', and spin and valley polarized `quarter metal', respectively. For electron doping, the salient features are well captured by a phenomenological Stoner model with a valley-anisotropic Hund's coupling, likely arising from interactions at the lattice scale. For hole filling, we observe a richer phase diagram featuring a delicate interplay of broken symmetries and transitions in the Fermi surface topology. Finally, by rotational alignment of a hexagonal boron nitride substrate to induce a moiré superlattice, we find that the superlattice perturbs the preexisting isospin order only weakly, leaving the basic phase diagram intact while catalyzing the formation of topologically nontrivial gapped states whenever itinerant half- or quarter metal states occur at half- or quarter superlattice band filling. Our results show that rhombohedral trilayer graphene is an ideal platform for well-controlled tests of many-body theory and reveal magnetism in moiré materials to be fundamentally itinerant in nature. acknowledgement: "The authors acknowledge discussions with A. Macdonald, L. Fu, F. Wang and M. Zaletel. AFY acknowledges support of the National Science Foundation under DMR1654186, and the Gordon and Betty Moore Foundation under award GBMF9471. The authors acknowledge the use of the research facilities within the California NanoSystems Institute, supported by the University of California, Santa Barbara and the University of California, Office of the President.\r\nK.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan, Grant Number JPMXP0112101001 and JSPS KAKENHI, Grant Number JP20H00354. EB and TH were supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement No. 817799). A.G. acknowledges support by the European Unions Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement\r\nNo. 754411.\r\n" article_processing_charge: No article_type: original author: - first_name: Haoxin full_name: Zhou, Haoxin last_name: Zhou - first_name: Tian full_name: Xie, Tian last_name: Xie - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Tobias full_name: Holder, Tobias last_name: Holder - first_name: James R. full_name: Ehrets, James R. last_name: Ehrets - first_name: Eric M. full_name: Spanton, Eric M. last_name: Spanton - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Erez full_name: Berg, Erez last_name: Berg - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young citation: ama: Zhou H, Xie T, Ghazaryan A, et al. Half and quarter metals in rhombohedral trilayer graphene. Nature. 2021. doi:10.1038/s41586-021-03938-w apa: Zhou, H., Xie, T., Ghazaryan, A., Holder, T., Ehrets, J. R., Spanton, E. M., … Young, A. F. (2021). Half and quarter metals in rhombohedral trilayer graphene. Nature. Springer Nature. https://doi.org/10.1038/s41586-021-03938-w chicago: Zhou, Haoxin, Tian Xie, Areg Ghazaryan, Tobias Holder, James R. Ehrets, Eric M. Spanton, Takashi Taniguchi, et al. “Half and Quarter Metals in Rhombohedral Trilayer Graphene.” Nature. Springer Nature, 2021. https://doi.org/10.1038/s41586-021-03938-w. ieee: H. Zhou et al., “Half and quarter metals in rhombohedral trilayer graphene,” Nature. Springer Nature, 2021. ista: Zhou H, Xie T, Ghazaryan A, Holder T, Ehrets JR, Spanton EM, Taniguchi T, Watanabe K, Berg E, Serbyn M, Young AF. 2021. Half and quarter metals in rhombohedral trilayer graphene. Nature. mla: Zhou, Haoxin, et al. “Half and Quarter Metals in Rhombohedral Trilayer Graphene.” Nature, Springer Nature, 2021, doi:10.1038/s41586-021-03938-w. short: H. Zhou, T. Xie, A. Ghazaryan, T. Holder, J.R. Ehrets, E.M. Spanton, T. Taniguchi, K. Watanabe, E. Berg, M. Serbyn, A.F. Young, Nature (2021). date_created: 2021-09-19T22:01:25Z date_published: 2021-09-01T00:00:00Z date_updated: 2023-08-14T07:04:06Z day: '01' department: - _id: MaSe - _id: MiLe doi: 10.1038/s41586-021-03938-w ec_funded: 1 external_id: arxiv: - '2104.00653' isi: - '000706977400002' isi: 1 keyword: - condensed matter - mesoscale and nanoscale physics - condensed matter - strongly correlated electrons - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2104.00653 month: '09' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Nature publication_identifier: eissn: - 1476-4687 issn: - 0028-0836 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: link: - relation: erratum url: https://doi.org/10.1038/s41586-021-04181-z scopus_import: '1' status: public title: Half and quarter metals in rhombohedral trilayer graphene type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 year: '2021' ... --- _id: '10176' abstract: - lang: eng text: "We give a combinatorial model for r-spin surfaces with parameterized boundary based on Novak (“Lattice topological field theories in two dimensions,” Ph.D. thesis, Universität Hamburg, 2015). The r-spin structure is encoded in terms of ℤ\U0001D45F-valued indices assigned to the edges of a polygonal decomposition. This combinatorial model is designed for our state-sum construction of two-dimensional topological field theories on r-spin surfaces. We show that an example of such a topological field theory computes the Arf-invariant of an r-spin surface as introduced by Randal-Williams [J. Topol. 7, 155 (2014)] and Geiges et al. [Osaka J. Math. 49, 449 (2012)]. This implies, in particular, that the r-spin Arf-invariant is constant on orbits of the mapping class group, providing an alternative proof of that fact." acknowledgement: We would like to thank Nils Carqueville, Tobias Dyckerhoff, Jan Hesse, Ehud Meir, Sebastian Novak, Louis-Hadrien Robert, Nick Salter, Walker Stern, and Lukas Woike for helpful discussions and comments. L.S. was supported by the DFG Research Training Group 1670 “Mathematics Inspired by String Theory and Quantum Field Theory.” article_number: '102302' article_processing_charge: No article_type: original author: - first_name: Ingo full_name: Runkel, Ingo last_name: Runkel - first_name: Lorant full_name: Szegedy, Lorant id: 7943226E-220E-11EA-94C7-D59F3DDC885E last_name: Szegedy orcid: 0000-0003-2834-5054 citation: ama: Runkel I, Szegedy L. Topological field theory on r-spin surfaces and the Arf-invariant. Journal of Mathematical Physics. 2021;62(10). doi:10.1063/5.0037826 apa: Runkel, I., & Szegedy, L. (2021). Topological field theory on r-spin surfaces and the Arf-invariant. Journal of Mathematical Physics. AIP Publishing. https://doi.org/10.1063/5.0037826 chicago: Runkel, Ingo, and Lorant Szegedy. “Topological Field Theory on R-Spin Surfaces and the Arf-Invariant.” Journal of Mathematical Physics. AIP Publishing, 2021. https://doi.org/10.1063/5.0037826. ieee: I. Runkel and L. Szegedy, “Topological field theory on r-spin surfaces and the Arf-invariant,” Journal of Mathematical Physics, vol. 62, no. 10. AIP Publishing, 2021. ista: Runkel I, Szegedy L. 2021. Topological field theory on r-spin surfaces and the Arf-invariant. Journal of Mathematical Physics. 62(10), 102302. mla: Runkel, Ingo, and Lorant Szegedy. “Topological Field Theory on R-Spin Surfaces and the Arf-Invariant.” Journal of Mathematical Physics, vol. 62, no. 10, 102302, AIP Publishing, 2021, doi:10.1063/5.0037826. short: I. Runkel, L. Szegedy, Journal of Mathematical Physics 62 (2021). date_created: 2021-10-24T22:01:32Z date_published: 2021-10-01T00:00:00Z date_updated: 2023-08-14T08:04:12Z day: '01' department: - _id: MiLe doi: 10.1063/5.0037826 external_id: arxiv: - '1802.09978' isi: - '000755638500010' intvolume: ' 62' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1802.09978 month: '10' oa: 1 oa_version: Preprint publication: Journal of Mathematical Physics publication_identifier: issn: - '00222488' publication_status: published publisher: AIP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Topological field theory on r-spin surfaces and the Arf-invariant type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 62 year: '2021' ... --- _id: '10401' abstract: - lang: eng text: Theoretical and experimental studies of the interaction between spins and temperature are vital for the development of spin caloritronics, as they dictate the design of future devices. In this work, we propose a two-terminal cold-atom simulator to study that interaction. The proposed quantum simulator consists of strongly interacting atoms that occupy two temperature reservoirs connected by a one-dimensional link. First, we argue that the dynamics in the link can be described using an inhomogeneous Heisenberg spin chain whose couplings are defined by the local temperature. Second, we show the existence of a spin current in a system with a temperature difference by studying the dynamics that follows the spin-flip of an atom in the link. A temperature gradient accelerates the impurity in one direction more than in the other, leading to an overall spin current similar to the spin Seebeck effect. acknowledgement: The authors acknowledge support from the European QuantERA ERA-NET Cofund in Quantum Technologies (Project QTFLAG Grant Agreement No. 731473) (R.E.B), CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) Brazil (A.F.), the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (A.G.V.), the Independent Research Fund Denmark, the Carlsberg Foundation, and Aarhus University Research Foundation under the Jens Christian Skou fellowship program (N.T.Z). article_number: '252' article_processing_charge: No article_type: original author: - first_name: Rafael E. full_name: Barfknecht, Rafael E. last_name: Barfknecht - first_name: Angela full_name: Foerster, Angela last_name: Foerster - first_name: Nikolaj T. full_name: Zinner, Nikolaj T. last_name: Zinner - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Barfknecht RE, Foerster A, Zinner NT, Volosniev A. Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. 2021;4(1). doi:10.1038/s42005-021-00753-7 apa: Barfknecht, R. E., Foerster, A., Zinner, N. T., & Volosniev, A. (2021). Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. Springer Nature. https://doi.org/10.1038/s42005-021-00753-7 chicago: Barfknecht, Rafael E., Angela Foerster, Nikolaj T. Zinner, and Artem Volosniev. “Generation of Spin Currents by a Temperature Gradient in a Two-Terminal Device.” Communications Physics. Springer Nature, 2021. https://doi.org/10.1038/s42005-021-00753-7. ieee: R. E. Barfknecht, A. Foerster, N. T. Zinner, and A. Volosniev, “Generation of spin currents by a temperature gradient in a two-terminal device,” Communications Physics, vol. 4, no. 1. Springer Nature, 2021. ista: Barfknecht RE, Foerster A, Zinner NT, Volosniev A. 2021. Generation of spin currents by a temperature gradient in a two-terminal device. Communications Physics. 4(1), 252. mla: Barfknecht, Rafael E., et al. “Generation of Spin Currents by a Temperature Gradient in a Two-Terminal Device.” Communications Physics, vol. 4, no. 1, 252, Springer Nature, 2021, doi:10.1038/s42005-021-00753-7. short: R.E. Barfknecht, A. Foerster, N.T. Zinner, A. Volosniev, Communications Physics 4 (2021). date_created: 2021-12-05T23:01:39Z date_published: 2021-11-26T00:00:00Z date_updated: 2023-08-14T13:04:34Z day: '26' ddc: - '530' department: - _id: MiLe doi: 10.1038/s42005-021-00753-7 ec_funded: 1 external_id: arxiv: - '2101.02020' isi: - 10.1038/s42005-021-00753-7 file: - access_level: open_access checksum: 9097319952cb9a3d96e7fd3aa9813a03 content_type: application/pdf creator: alisjak date_created: 2021-12-06T14:53:41Z date_updated: 2021-12-06T14:53:41Z file_id: '10420' file_name: 2021_NatComm_Barfknecht.pdf file_size: 1068984 relation: main_file success: 1 file_date_updated: 2021-12-06T14:53:41Z has_accepted_license: '1' intvolume: ' 4' issue: '1' language: - iso: eng month: '11' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Communications Physics publication_identifier: eissn: - '23993650' publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Generation of spin currents by a temperature gradient in a two-terminal device tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 4 year: '2021' ... --- _id: '10628' abstract: - lang: eng text: The surface states of 3D topological insulators in general have negligible quantum oscillations (QOs) when the chemical potential is tuned to the Dirac points. In contrast, we find that topological Kondo insulators (TKIs) can support surface states with an arbitrarily large Fermi surface (FS) when the chemical potential is pinned to the Dirac point. We illustrate that these FSs give rise to finite-frequency QOs, which can become comparable to the extremal area of the unhybridized bulk bands. We show that this occurs when the crystal symmetry is lowered from cubic to tetragonal in a minimal two-orbital model. We label such surface modes as 'shadow surface states'. Moreover, we show that the sufficient next-nearest neighbor out-of-plane hybridization leading to shadow surface states can be self-consistently stabilized for tetragonal TKIs. Consequently, shadow surface states provide an important example of high-frequency QOs beyond the context of cubic TKIs. acknowledgement: PG acknowledges support from National Science Foundation Awards No. DMR-1824265 for this work. AG acknowledges support from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411. EMN is supported by ASU startup grant. OE is in part supported by NSF-DMR-1904716. article_number: '123042' article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Emilian M. full_name: Nica, Emilian M. last_name: Nica - first_name: Onur full_name: Erten, Onur last_name: Erten - first_name: Pouyan full_name: Ghaemi, Pouyan last_name: Ghaemi citation: ama: Ghazaryan A, Nica EM, Erten O, Ghaemi P. Shadow surface states in topological Kondo insulators. New Journal of Physics. 2021;23(12). doi:10.1088/1367-2630/ac4124 apa: Ghazaryan, A., Nica, E. M., Erten, O., & Ghaemi, P. (2021). Shadow surface states in topological Kondo insulators. New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/ac4124 chicago: Ghazaryan, Areg, Emilian M. Nica, Onur Erten, and Pouyan Ghaemi. “Shadow Surface States in Topological Kondo Insulators.” New Journal of Physics. IOP Publishing, 2021. https://doi.org/10.1088/1367-2630/ac4124. ieee: A. Ghazaryan, E. M. Nica, O. Erten, and P. Ghaemi, “Shadow surface states in topological Kondo insulators,” New Journal of Physics, vol. 23, no. 12. IOP Publishing, 2021. ista: Ghazaryan A, Nica EM, Erten O, Ghaemi P. 2021. Shadow surface states in topological Kondo insulators. New Journal of Physics. 23(12), 123042. mla: Ghazaryan, Areg, et al. “Shadow Surface States in Topological Kondo Insulators.” New Journal of Physics, vol. 23, no. 12, 123042, IOP Publishing, 2021, doi:10.1088/1367-2630/ac4124. short: A. Ghazaryan, E.M. Nica, O. Erten, P. Ghaemi, New Journal of Physics 23 (2021). date_created: 2022-01-16T23:01:28Z date_published: 2021-12-23T00:00:00Z date_updated: 2023-08-17T06:54:54Z day: '23' ddc: - '530' department: - _id: MiLe doi: 10.1088/1367-2630/ac4124 ec_funded: 1 external_id: arxiv: - '2012.11625' isi: - '000734063700001' file: - access_level: open_access checksum: 0c3cb6816242fa8afd1cc87a5fe77821 content_type: application/pdf creator: cchlebak date_created: 2022-01-17T10:01:58Z date_updated: 2022-01-17T10:01:58Z file_id: '10632' file_name: 2021_NewJourPhys_Ghazaryan.pdf file_size: 2533102 relation: main_file success: 1 file_date_updated: 2022-01-17T10:01:58Z has_accepted_license: '1' intvolume: ' 23' isi: 1 issue: '12' language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: New Journal of Physics publication_identifier: issn: - 1367-2630 publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Shadow surface states in topological Kondo insulators tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 23 year: '2021' ... --- _id: '10631' abstract: - lang: eng text: We combine experimental and theoretical approaches to explore excited rotational states of molecules embedded in helium nanodroplets using CS2 and I2 as examples. Laser-induced nonadiabatic molecular alignment is employed to measure spectral lines for rotational states extending beyond those initially populated at the 0.37 K droplet temperature. We construct a simple quantum-mechanical model, based on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational energy structure in its entirety. The calculated and measured spectral lines are in good agreement. We show that the effect of the surrounding superfluid on molecular rotation can be rationalized by a single quantity, the angular momentum, transferred from the molecule to the droplet. acknowledgement: I.C. acknowledges the support by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 665385. G.B. acknowledges support from the Austrian Science Fund (FWF), under project No. M2461-N27. M.L. acknowledges support by the Austrian Science Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). H.S acknowledges support from the European Research Council-AdG (Project No. 320459, DropletControl) and from The Villum Foundation through a Villum Investigator grant no. 25886. article_number: L061303 article_processing_charge: No article_type: original author: - first_name: Igor full_name: Cherepanov, Igor id: 339C7E5A-F248-11E8-B48F-1D18A9856A87 last_name: Cherepanov - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Constant A. full_name: Schouder, Constant A. last_name: Schouder - first_name: Adam S. full_name: Chatterley, Adam S. last_name: Chatterley - first_name: Simon H. full_name: Albrechtsen, Simon H. last_name: Albrechtsen - first_name: Alberto Viñas full_name: Muñoz, Alberto Viñas last_name: Muñoz - first_name: Lars full_name: Christiansen, Lars last_name: Christiansen - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Cherepanov I, Bighin G, Schouder CA, et al. Excited rotational states of molecules in a superfluid. Physical Review A. 2021;104(6). doi:10.1103/PhysRevA.104.L061303 apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Albrechtsen, S. H., Muñoz, A. V., … Lemeshko, M. (2021). Excited rotational states of molecules in a superfluid. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.104.L061303 chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley, Simon H. Albrechtsen, Alberto Viñas Muñoz, Lars Christiansen, Henrik Stapelfeldt, and Mikhail Lemeshko. “Excited Rotational States of Molecules in a Superfluid.” Physical Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.104.L061303. ieee: I. Cherepanov et al., “Excited rotational states of molecules in a superfluid,” Physical Review A, vol. 104, no. 6. American Physical Society, 2021. ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Albrechtsen SH, Muñoz AV, Christiansen L, Stapelfeldt H, Lemeshko M. 2021. Excited rotational states of molecules in a superfluid. Physical Review A. 104(6), L061303. mla: Cherepanov, Igor, et al. “Excited Rotational States of Molecules in a Superfluid.” Physical Review A, vol. 104, no. 6, L061303, American Physical Society, 2021, doi:10.1103/PhysRevA.104.L061303. short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, S.H. Albrechtsen, A.V. Muñoz, L. Christiansen, H. Stapelfeldt, M. Lemeshko, Physical Review A 104 (2021). date_created: 2022-01-16T23:01:29Z date_published: 2021-12-30T00:00:00Z date_updated: 2023-08-17T06:52:17Z day: '30' department: - _id: MiLe doi: 10.1103/PhysRevA.104.L061303 ec_funded: 1 external_id: arxiv: - '2107.00468' isi: - '000739618300001' intvolume: ' 104' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: http://128.84.4.18/abs/2107.00468 month: '12' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Excited rotational states of molecules in a superfluid type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 104 year: '2021' ... --- _id: '10762' abstract: - lang: eng text: Methods inspired from machine learning have recently attracted great interest in the computational study of quantum many-particle systems. So far, however, it has proven challenging to deal with microscopic models in which the total number of particles is not conserved. To address this issue, we propose a new variant of neural network states, which we term neural coherent states. Taking the Fröhlich impurity model as a case study, we show that neural coherent states can learn the ground state of non-additive systems very well. In particular, we observe substantial improvement over the standard coherent state estimates in the most challenging intermediate coupling regime. Our approach is generic and does not assume specific details of the system, suggesting wide applications. acknowledgement: "We acknowledge fruitful discussions with Giacomo Bighin, Giammarco Fabiani, Areg Ghazaryan, Christoph\r\nLampert, and Artem Volosniev at various stages of this work. W.R. is a recipient of a DOC Fellowship of the\r\nAustrian Academy of Sciences and has received funding from the EU Horizon 2020 programme under the Marie\r\nSkłodowska-Curie Grant Agreement No. 665385. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). This work is part of the Shell-NWO/FOM-initiative “Computational sciences for energy research” of Shell and Chemical Sciences, Earth and Life Sciences, Physical Sciences, FOM and STW." article_processing_charge: No author: - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Johan H. full_name: Mentink, Johan H. last_name: Mentink citation: ama: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for non-additive systems. arXiv. doi:10.48550/arXiv.2105.15193 apa: Rzadkowski, W., Lemeshko, M., & Mentink, J. H. (n.d.). Artificial neural network states for non-additive systems. arXiv. https://doi.org/10.48550/arXiv.2105.15193 chicago: Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial Neural Network States for Non-Additive Systems.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2105.15193. ieee: W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network states for non-additive systems,” arXiv. . ista: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for non-additive systems. arXiv, 10.48550/arXiv.2105.15193. mla: Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Non-Additive Systems.” ArXiv, doi:10.48550/arXiv.2105.15193. short: W. Rzadkowski, M. Lemeshko, J.H. Mentink, ArXiv (n.d.). date_created: 2022-02-17T11:18:57Z date_published: 2021-05-31T00:00:00Z date_updated: 2023-09-07T13:44:16Z day: '31' department: - _id: MiLe doi: 10.48550/arXiv.2105.15193 ec_funded: 1 external_id: arxiv: - '2105.15193' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2105.15193 month: '05' oa: 1 oa_version: Preprint page: '2105.15193' project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: arXiv publication_status: submitted related_material: record: - id: '10759' relation: dissertation_contains status: public status: public title: Artificial neural network states for non-additive systems type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2021' ... --- _id: '10029' abstract: - lang: eng text: Superconductor-semiconductor hybrids are platforms for realizing effective p-wave superconductivity. Spin-orbit coupling, combined with the proximity effect, causes the two-dimensional semiconductor to inherit p±ip intraband pairing, and application of magnetic field can then result in transitions to the normal state, partial Bogoliubov Fermi surfaces, or topological phases with Majorana modes. Experimentally probing the hybrid superconductor-semiconductor interface is challenging due to the shunting effect of the conventional superconductor. Consequently, the nature of induced pairing remains an open question. Here, we use the circuit quantum electrodynamics architecture to probe induced superconductivity in a two dimensional Al-InAs hybrid system. We observe a strong suppression of superfluid density and enhanced dissipation driven by magnetic field, which cannot be accounted for by the depairing theory of an s-wave superconductor. These observations are explained by a picture of independent intraband p±ip superconductors giving way to partial Bogoliubov Fermi surfaces, and allow for the first characterization of key properties of the hybrid superconducting system. acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: This research was supported by the Scientific Service Units of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication facility. JS and AG were supported by funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No.754411. article_number: '2107.03695' article_processing_charge: No author: - first_name: Duc T full_name: Phan, Duc T id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87 last_name: Phan - first_name: Jorden L full_name: Senior, Jorden L id: 5479D234-2D30-11EA-89CC-40953DDC885E last_name: Senior orcid: 0000-0002-0672-9295 - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: M. full_name: Hatefipour, M. last_name: Hatefipour - first_name: W. M. full_name: Strickland, W. M. last_name: Strickland - first_name: J. full_name: Shabani, J. last_name: Shabani - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 citation: ama: Phan DT, Senior JL, Ghazaryan A, et al. Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. arXiv. apa: Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M., Shabani, J., … Higginbotham, A. P. (n.d.). Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. arXiv. chicago: Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland, J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor Hybrid.” ArXiv, n.d. ieee: D. T. Phan et al., “Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid,” arXiv. . ista: Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn M, Higginbotham AP. Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid. arXiv, 2107.03695. mla: Phan, Duc T., et al. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor Hybrid.” ArXiv, 2107.03695. short: D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J. Shabani, M. Serbyn, A.P. Higginbotham, ArXiv (n.d.). date_created: 2021-09-21T08:41:02Z date_published: 2021-07-08T00:00:00Z date_updated: 2024-02-21T12:36:52Z day: '08' department: - _id: MaSe - _id: AnHi - _id: MiLe ec_funded: 1 external_id: arxiv: - '2107.03695' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2107.03695 month: '07' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: arXiv publication_status: submitted related_material: record: - id: '10851' relation: later_version status: public - id: '9636' relation: research_data status: public status: public title: Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2021' ... --- _id: '10134' abstract: - lang: eng text: We investigate the effect of coupling between translational and internal degrees of freedom of composite quantum particles on their localization in a random potential. We show that entanglement between the two degrees of freedom weakens localization due to the upper bound imposed on the inverse participation ratio by purity of a quantum state. We perform numerical calculations for a two-particle system bound by a harmonic force in a 1D disordered lattice and a rigid rotor in a 2D disordered lattice. We illustrate that the coupling has a dramatic effect on localization properties, even with a small number of internal states participating in quantum dynamics. acknowledgement: "We acknowledge helpful discussions with W. G. Unruh and A. Rodriguez. F. S. is supported by European Union’s\r\nHorizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant No. 754411. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). W. H. Z. is\r\nsupported by Department of Energy under the Los\r\nAlamos National Laboratory LDRD Program as well as by the U.S. Department of Energy, Office of Science, Basic\r\nEnergy Sciences, Materials Sciences and Engineering Division, Condensed Matter Theory Program. R. V. K. is supported by NSERC of Canada.\r\n" article_number: '160602' article_processing_charge: No article_type: original author: - first_name: Fumika full_name: Suzuki, Fumika id: 650C99FC-1079-11EA-A3C0-73AE3DDC885E last_name: Suzuki orcid: 0000-0003-4982-5970 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Wojciech H. full_name: Zurek, Wojciech H. last_name: Zurek - first_name: Roman V. full_name: Krems, Roman V. last_name: Krems citation: ama: Suzuki F, Lemeshko M, Zurek WH, Krems RV. Anderson localization of composite particles. Physical Review Letters. 2021;127(16). doi:10.1103/physrevlett.127.160602 apa: Suzuki, F., Lemeshko, M., Zurek, W. H., & Krems, R. V. (2021). Anderson localization of composite particles. Physical Review Letters. American Physical Society . https://doi.org/10.1103/physrevlett.127.160602 chicago: Suzuki, Fumika, Mikhail Lemeshko, Wojciech H. Zurek, and Roman V. Krems. “Anderson Localization of Composite Particles.” Physical Review Letters. American Physical Society , 2021. https://doi.org/10.1103/physrevlett.127.160602. ieee: F. Suzuki, M. Lemeshko, W. H. Zurek, and R. V. Krems, “Anderson localization of composite particles,” Physical Review Letters, vol. 127, no. 16. American Physical Society , 2021. ista: Suzuki F, Lemeshko M, Zurek WH, Krems RV. 2021. Anderson localization of composite particles. Physical Review Letters. 127(16), 160602. mla: Suzuki, Fumika, et al. “Anderson Localization of Composite Particles.” Physical Review Letters, vol. 127, no. 16, 160602, American Physical Society , 2021, doi:10.1103/physrevlett.127.160602. short: F. Suzuki, M. Lemeshko, W.H. Zurek, R.V. Krems, Physical Review Letters 127 (2021). date_created: 2021-10-13T09:21:33Z date_published: 2021-10-12T00:00:00Z date_updated: 2024-02-29T12:34:10Z day: '12' department: - _id: MiLe doi: 10.1103/physrevlett.127.160602 ec_funded: 1 external_id: arxiv: - '2011.06279' isi: - '000707495700001' intvolume: ' 127' isi: 1 issue: '16' keyword: - General Physics and Astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2011.06279 month: '10' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: 'American Physical Society ' quality_controlled: '1' scopus_import: '1' status: public title: Anderson localization of composite particles type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 127 year: '2021' ... --- _id: '7594' abstract: - lang: eng text: The concept of the entanglement between spin and orbital degrees of freedom plays a crucial role in our understanding of various phases and exotic ground states in a broad class of materials, including orbitally ordered materials and spin liquids. We investigate how the spin-orbital entanglement in a Mott insulator depends on the value of the spin-orbit coupling of the relativistic origin. To this end, we numerically diagonalize a one-dimensional spin-orbital model with Kugel-Khomskii exchange interactions between spins and orbitals on different sites supplemented by the on-site spin-orbit coupling. In the regime of small spin-orbit coupling with regard to the spin-orbital exchange, the ground state to a large extent resembles the one obtained in the limit of vanishing spin-orbit coupling. On the other hand, for large spin-orbit coupling the ground state can, depending on the model parameters, either still show negligible spin-orbital entanglement or evolve to a highly spin-orbitally-entangled phase with completely distinct properties that are described by an effective XXZ model. The presented results suggest that (i) the spin-orbital entanglement may be induced by large on-site spin-orbit coupling, as found in the 5d transition metal oxides, such as the iridates; (ii) for Mott insulators with weak spin-orbit coupling of Ising type, such as, e.g., the alkali hyperoxides, the effects of the spin-orbit coupling on the ground state can, in the first order of perturbation theory, be neglected. article_number: '013353' article_processing_charge: No article_type: original author: - first_name: Dorota full_name: Gotfryd, Dorota last_name: Gotfryd - first_name: Ekaterina full_name: Paerschke, Ekaterina id: 8275014E-6063-11E9-9B7F-6338E6697425 last_name: Paerschke orcid: 0000-0003-0853-8182 - first_name: Jiri full_name: Chaloupka, Jiri last_name: Chaloupka - first_name: Andrzej M. full_name: Oles, Andrzej M. last_name: Oles - first_name: Krzysztof full_name: Wohlfeld, Krzysztof last_name: Wohlfeld citation: ama: Gotfryd D, Paerschke E, Chaloupka J, Oles AM, Wohlfeld K. How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator. Physical Review Research. 2020;2(1). doi:10.1103/PhysRevResearch.2.013353 apa: Gotfryd, D., Paerschke, E., Chaloupka, J., Oles, A. M., & Wohlfeld, K. (2020). How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.2.013353 chicago: Gotfryd, Dorota, Ekaterina Paerschke, Jiri Chaloupka, Andrzej M. Oles, and Krzysztof Wohlfeld. “How Spin-Orbital Entanglement Depends on the Spin-Orbit Coupling in a Mott Insulator.” Physical Review Research. American Physical Society, 2020. https://doi.org/10.1103/PhysRevResearch.2.013353. ieee: D. Gotfryd, E. Paerschke, J. Chaloupka, A. M. Oles, and K. Wohlfeld, “How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator,” Physical Review Research, vol. 2, no. 1. American Physical Society, 2020. ista: Gotfryd D, Paerschke E, Chaloupka J, Oles AM, Wohlfeld K. 2020. How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator. Physical Review Research. 2(1), 013353. mla: Gotfryd, Dorota, et al. “How Spin-Orbital Entanglement Depends on the Spin-Orbit Coupling in a Mott Insulator.” Physical Review Research, vol. 2, no. 1, 013353, American Physical Society, 2020, doi:10.1103/PhysRevResearch.2.013353. short: D. Gotfryd, E. Paerschke, J. Chaloupka, A.M. Oles, K. Wohlfeld, Physical Review Research 2 (2020). date_created: 2020-03-20T15:21:10Z date_published: 2020-03-20T00:00:00Z date_updated: 2021-01-12T08:14:23Z day: '20' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevResearch.2.013353 ec_funded: 1 file: - access_level: open_access checksum: 1be551fd5f5583635076017d7391ffdc content_type: application/pdf creator: dernst date_created: 2020-03-23T10:18:38Z date_updated: 2020-07-14T12:48:00Z file_id: '7610' file_name: 2020_PhysRevResearch_Gotfryd.pdf file_size: 1436735 relation: main_file file_date_updated: 2020-07-14T12:48:00Z has_accepted_license: '1' intvolume: ' 2' issue: '1' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review Research publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2020' ... --- _id: '7919' abstract: - lang: eng text: We explore the time evolution of two impurities in a trapped one-dimensional Bose gas that follows a change of the boson-impurity interaction. We study the induced impurity-impurity interactions and their effect on the quench dynamics. In particular, we report on the size of the impurity cloud, the impurity-impurity entanglement, and the impurity-impurity correlation function. The presented numerical simulations are based upon the variational multilayer multiconfiguration time-dependent Hartree method for bosons. To analyze and quantify induced impurity-impurity correlations, we employ an effective two-body Hamiltonian with a contact interaction. We show that the effective model consistent with the mean-field attraction of two heavy impurities explains qualitatively our results for weak interactions. Our findings suggest that the quench dynamics in cold-atom systems can be a tool for studying impurity-impurity correlations. article_number: '023154 ' article_processing_charge: No article_type: original author: - first_name: S. I. full_name: Mistakidis, S. I. last_name: Mistakidis - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: P. full_name: Schmelcher, P. last_name: Schmelcher citation: ama: Mistakidis SI, Volosniev A, Schmelcher P. Induced correlations between impurities in a one-dimensional quenched Bose gas. Physical Review Research. 2020;2. doi:10.1103/physrevresearch.2.023154 apa: Mistakidis, S. I., Volosniev, A., & Schmelcher, P. (2020). Induced correlations between impurities in a one-dimensional quenched Bose gas. Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.2.023154 chicago: Mistakidis, S. I., Artem Volosniev, and P. Schmelcher. “Induced Correlations between Impurities in a One-Dimensional Quenched Bose Gas.” Physical Review Research. American Physical Society, 2020. https://doi.org/10.1103/physrevresearch.2.023154. ieee: S. I. Mistakidis, A. Volosniev, and P. Schmelcher, “Induced correlations between impurities in a one-dimensional quenched Bose gas,” Physical Review Research, vol. 2. American Physical Society, 2020. ista: Mistakidis SI, Volosniev A, Schmelcher P. 2020. Induced correlations between impurities in a one-dimensional quenched Bose gas. Physical Review Research. 2, 023154. mla: Mistakidis, S. I., et al. “Induced Correlations between Impurities in a One-Dimensional Quenched Bose Gas.” Physical Review Research, vol. 2, 023154, American Physical Society, 2020, doi:10.1103/physrevresearch.2.023154. short: S.I. Mistakidis, A. Volosniev, P. Schmelcher, Physical Review Research 2 (2020). date_created: 2020-06-03T11:30:10Z date_published: 2020-05-11T00:00:00Z date_updated: 2023-02-23T13:20:16Z day: '11' ddc: - '530' department: - _id: MiLe doi: 10.1103/physrevresearch.2.023154 ec_funded: 1 file: - access_level: open_access checksum: e1c362fe094d6b246b3cd4a49722e78b content_type: application/pdf creator: dernst date_created: 2020-06-04T13:51:59Z date_updated: 2020-07-14T12:48:05Z file_id: '7926' file_name: 2020_PhysRevResearch_Mistakidis.pdf file_size: 1741098 relation: main_file file_date_updated: 2020-07-14T12:48:05Z has_accepted_license: '1' intvolume: ' 2' language: - iso: eng month: '05' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Induced correlations between impurities in a one-dimensional quenched Bose gas tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2020' ... --- _id: '8726' abstract: - lang: eng text: Several realistic spin-orbital models for transition metal oxides go beyond the classical expectations and could be understood only by employing the quantum entanglement. Experiments on these materials confirm that spin-orbital entanglement has measurable consequences. Here, we capture the essential features of spin-orbital entanglement in complex quantum matter utilizing 1D spin-orbital model which accommodates SU(2)⊗SU(2) symmetric Kugel-Khomskii superexchange as well as the Ising on-site spin-orbit coupling. Building on the results obtained for full and effective models in the regime of strong spin-orbit coupling, we address the question whether the entanglement found on superexchange bonds always increases when the Ising spin-orbit coupling is added. We show that (i) quantum entanglement is amplified by strong spin-orbit coupling and, surprisingly, (ii) almost classical disentangled states are possible. We complete the latter case by analyzing how the entanglement existing for intermediate values of spin-orbit coupling can disappear for higher values of this coupling. article_number: '53' article_processing_charge: No article_type: original author: - first_name: Dorota full_name: Gotfryd, Dorota last_name: Gotfryd - first_name: Ekaterina full_name: Paerschke, Ekaterina id: 8275014E-6063-11E9-9B7F-6338E6697425 last_name: Paerschke orcid: 0000-0003-0853-8182 - first_name: Krzysztof full_name: Wohlfeld, Krzysztof last_name: Wohlfeld - first_name: Andrzej M. full_name: Oleś, Andrzej M. last_name: Oleś citation: ama: Gotfryd D, Paerschke E, Wohlfeld K, Oleś AM. Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling. Condensed Matter. 2020;5(3). doi:10.3390/condmat5030053 apa: Gotfryd, D., Paerschke, E., Wohlfeld, K., & Oleś, A. M. (2020). Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling. Condensed Matter. MDPI. https://doi.org/10.3390/condmat5030053 chicago: Gotfryd, Dorota, Ekaterina Paerschke, Krzysztof Wohlfeld, and Andrzej M. Oleś. “Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling.” Condensed Matter. MDPI, 2020. https://doi.org/10.3390/condmat5030053. ieee: D. Gotfryd, E. Paerschke, K. Wohlfeld, and A. M. Oleś, “Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling,” Condensed Matter, vol. 5, no. 3. MDPI, 2020. ista: Gotfryd D, Paerschke E, Wohlfeld K, Oleś AM. 2020. Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling. Condensed Matter. 5(3), 53. mla: Gotfryd, Dorota, et al. “Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling.” Condensed Matter, vol. 5, no. 3, 53, MDPI, 2020, doi:10.3390/condmat5030053. short: D. Gotfryd, E. Paerschke, K. Wohlfeld, A.M. Oleś, Condensed Matter 5 (2020). date_created: 2020-11-06T07:21:00Z date_published: 2020-08-26T00:00:00Z date_updated: 2021-01-12T08:20:46Z day: '26' ddc: - '530' department: - _id: MiLe doi: 10.3390/condmat5030053 ec_funded: 1 external_id: arxiv: - '2009.11773' file: - access_level: open_access checksum: a57a698ff99a11b6665bafd1bac7afbc content_type: application/pdf creator: dernst date_created: 2020-11-06T07:24:40Z date_updated: 2020-11-06T07:24:40Z file_id: '8727' file_name: 2020_CondensedMatter_Gotfryd.pdf file_size: 768336 relation: main_file success: 1 file_date_updated: 2020-11-06T07:24:40Z has_accepted_license: '1' intvolume: ' 5' issue: '3' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Condensed Matter publication_identifier: issn: - 2410-3896 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 5 year: '2020' ... --- _id: '7882' abstract: - lang: eng text: A few-body cluster is a building block of a many-body system in a gas phase provided the temperature at most is of the order of the binding energy of this cluster. Here we illustrate this statement by considering a system of tubes filled with dipolar distinguishable particles. We calculate the partition function, which determines the probability to find a few-body cluster at a given temperature. The input for our calculations—the energies of few-body clusters—is estimated using the harmonic approximation. We first describe and demonstrate the validity of our numerical procedure. Then we discuss the results featuring melting of the zero-temperature many-body state into a gas of free particles and few-body clusters. For temperature higher than its binding energy threshold, the dimers overwhelmingly dominate the ensemble, where the remaining probability is in free particles. At very high temperatures free (harmonic oscillator trap-bound) particle dominance is eventually reached. This structure evolution appears both for one and two particles in each layer providing crucial information about the behavior of ultracold dipolar gases. The investigation addresses the transition region between few- and many-body physics as a function of temperature using a system of ten dipoles in five tubes. article_number: '484' article_processing_charge: No article_type: original author: - first_name: Jeremy R. full_name: Armstrong, Jeremy R. last_name: Armstrong - first_name: Aksel S. full_name: Jensen, Aksel S. last_name: Jensen - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Nikolaj T. full_name: Zinner, Nikolaj T. last_name: Zinner citation: ama: Armstrong JR, Jensen AS, Volosniev A, Zinner NT. Clusters in separated tubes of tilted dipoles. Mathematics. 2020;8(4). doi:10.3390/math8040484 apa: Armstrong, J. R., Jensen, A. S., Volosniev, A., & Zinner, N. T. (2020). Clusters in separated tubes of tilted dipoles. Mathematics. MDPI. https://doi.org/10.3390/math8040484 chicago: Armstrong, Jeremy R., Aksel S. Jensen, Artem Volosniev, and Nikolaj T. Zinner. “Clusters in Separated Tubes of Tilted Dipoles.” Mathematics. MDPI, 2020. https://doi.org/10.3390/math8040484. ieee: J. R. Armstrong, A. S. Jensen, A. Volosniev, and N. T. Zinner, “Clusters in separated tubes of tilted dipoles,” Mathematics, vol. 8, no. 4. MDPI, 2020. ista: Armstrong JR, Jensen AS, Volosniev A, Zinner NT. 2020. Clusters in separated tubes of tilted dipoles. Mathematics. 8(4), 484. mla: Armstrong, Jeremy R., et al. “Clusters in Separated Tubes of Tilted Dipoles.” Mathematics, vol. 8, no. 4, 484, MDPI, 2020, doi:10.3390/math8040484. short: J.R. Armstrong, A.S. Jensen, A. Volosniev, N.T. Zinner, Mathematics 8 (2020). date_created: 2020-05-24T22:01:00Z date_published: 2020-04-01T00:00:00Z date_updated: 2023-08-21T06:23:36Z day: '01' ddc: - '510' department: - _id: MiLe doi: 10.3390/math8040484 ec_funded: 1 external_id: isi: - '000531824100024' file: - access_level: open_access checksum: a05a7df724522203d079673a0d4de4bc content_type: application/pdf creator: dernst date_created: 2020-05-25T14:42:22Z date_updated: 2020-07-14T12:48:04Z file_id: '7887' file_name: 2020_Mathematics_Armstrong.pdf file_size: 990540 relation: main_file file_date_updated: 2020-07-14T12:48:04Z has_accepted_license: '1' intvolume: ' 8' isi: 1 issue: '4' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Mathematics publication_identifier: eissn: - '22277390' publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Clusters in separated tubes of tilted dipoles tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 8 year: '2020' ... --- _id: '7933' abstract: - lang: eng text: We study a mobile quantum impurity, possessing internal rotational degrees of freedom, confined to a ring in the presence of a many-particle bosonic bath. By considering the recently introduced rotating polaron problem, we define the Hamiltonian and examine the energy spectrum. The weak-coupling regime is studied by means of a variational ansatz in the truncated Fock space. The corresponding spectrum indicates that there emerges a coupling between the internal and orbital angular momenta of the impurity as a consequence of the phonon exchange. We interpret the coupling as a phonon-mediated spin-orbit coupling and quantify it by using a correlation function between the internal and the orbital angular momentum operators. The strong-coupling regime is investigated within the Pekar approach, and it is shown that the correlation function of the ground state shows a kink at a critical coupling, that is explained by a sharp transition from the noninteracting state to the states that exhibit strong interaction with the surroundings. The results might find applications in such fields as spintronics or topological insulators where spin-orbit coupling is of crucial importance. article_number: '184104 ' article_processing_charge: No article_type: original author: - first_name: Mikhail full_name: Maslov, Mikhail id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87 last_name: Maslov orcid: 0000-0003-4074-2570 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 citation: ama: Maslov M, Lemeshko M, Yakaboylu E. Synthetic spin-orbit coupling mediated by a bosonic environment. Physical Review B. 2020;101(18). doi:10.1103/PhysRevB.101.184104 apa: Maslov, M., Lemeshko, M., & Yakaboylu, E. (2020). Synthetic spin-orbit coupling mediated by a bosonic environment. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.101.184104 chicago: Maslov, Mikhail, Mikhail Lemeshko, and Enderalp Yakaboylu. “Synthetic Spin-Orbit Coupling Mediated by a Bosonic Environment.” Physical Review B. American Physical Society, 2020. https://doi.org/10.1103/PhysRevB.101.184104. ieee: M. Maslov, M. Lemeshko, and E. Yakaboylu, “Synthetic spin-orbit coupling mediated by a bosonic environment,” Physical Review B, vol. 101, no. 18. American Physical Society, 2020. ista: Maslov M, Lemeshko M, Yakaboylu E. 2020. Synthetic spin-orbit coupling mediated by a bosonic environment. Physical Review B. 101(18), 184104. mla: Maslov, Mikhail, et al. “Synthetic Spin-Orbit Coupling Mediated by a Bosonic Environment.” Physical Review B, vol. 101, no. 18, 184104, American Physical Society, 2020, doi:10.1103/PhysRevB.101.184104. short: M. Maslov, M. Lemeshko, E. Yakaboylu, Physical Review B 101 (2020). date_created: 2020-06-07T22:00:52Z date_published: 2020-05-01T00:00:00Z date_updated: 2023-08-21T07:05:15Z day: '01' department: - _id: MiLe doi: 10.1103/PhysRevB.101.184104 ec_funded: 1 external_id: arxiv: - '1912.03092' isi: - '000530754700003' intvolume: ' 101' isi: 1 issue: '18' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.03092 month: '05' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review B publication_identifier: eissn: - '24699969' issn: - '24699950' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Synthetic spin-orbit coupling mediated by a bosonic environment type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 101 year: '2020' ... --- _id: '8170' abstract: - lang: eng text: "Alignment of OCS, CS2, and I2 molecules embedded in helium nanodroplets is measured as a function\r\nof time following rotational excitation by a nonresonant, comparatively weak ps laser pulse. The distinct\r\npeaks in the power spectra, obtained by Fourier analysis, are used to determine the rotational, B, and\r\ncentrifugal distortion, D, constants. For OCS, B and D match the values known from IR spectroscopy. For\r\nCS2 and I2, they are the first experimental results reported. The alignment dynamics calculated from the\r\ngas-phase rotational Schrödinger equation, using the experimental in-droplet B and D values, agree in\r\ndetail with the measurement for all three molecules. The rotational spectroscopy technique for molecules in\r\nhelium droplets introduced here should apply to a range of molecules and complexes." acknowledgement: "H. S. acknowledges support from the European Research Council-AdG (Project No. 320459, DropletControl)\r\nand from The Villum Foundation through a Villum Investigator Grant No. 25886. M. L. acknowledges support\r\nby the Austrian Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council\r\n(ERC) Starting Grant No. 801770 (ANGULON). G. B. acknowledges support from the Austrian Science Fund\r\n(FWF), under Project No. M2641-N27. I. C. acknowledges support by the European Union’s Horizon 2020 research and\r\ninnovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. Computational resources for\r\nthe PIMC simulations were provided by the division for scientific computing at the Johannes Kepler University." article_number: '013001' article_processing_charge: No article_type: original author: - first_name: Adam S. full_name: Chatterley, Adam S. last_name: Chatterley - first_name: Lars full_name: Christiansen, Lars last_name: Christiansen - first_name: Constant A. full_name: Schouder, Constant A. last_name: Schouder - first_name: Anders V. full_name: Jørgensen, Anders V. last_name: Jørgensen - first_name: Benjamin full_name: Shepperson, Benjamin last_name: Shepperson - first_name: Igor full_name: Cherepanov, Igor id: 339C7E5A-F248-11E8-B48F-1D18A9856A87 last_name: Cherepanov - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Robert E. full_name: Zillich, Robert E. last_name: Zillich - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt citation: ama: 'Chatterley AS, Christiansen L, Schouder CA, et al. Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. 2020;125(1). doi:10.1103/PhysRevLett.125.013001' apa: 'Chatterley, A. S., Christiansen, L., Schouder, C. A., Jørgensen, A. V., Shepperson, B., Cherepanov, I., … Stapelfeldt, H. (2020). Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.013001' chicago: 'Chatterley, Adam S., Lars Christiansen, Constant A. Schouder, Anders V. Jørgensen, Benjamin Shepperson, Igor Cherepanov, Giacomo Bighin, Robert E. Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Rotational Coherence Spectroscopy of Molecules in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.” Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/PhysRevLett.125.013001.' ieee: 'A. S. Chatterley et al., “Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains,” Physical Review Letters, vol. 125, no. 1. American Physical Society, 2020.' ista: 'Chatterley AS, Christiansen L, Schouder CA, Jørgensen AV, Shepperson B, Cherepanov I, Bighin G, Zillich RE, Lemeshko M, Stapelfeldt H. 2020. Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains. Physical Review Letters. 125(1), 013001.' mla: 'Chatterley, Adam S., et al. “Rotational Coherence Spectroscopy of Molecules in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.” Physical Review Letters, vol. 125, no. 1, 013001, American Physical Society, 2020, doi:10.1103/PhysRevLett.125.013001.' short: A.S. Chatterley, L. Christiansen, C.A. Schouder, A.V. Jørgensen, B. Shepperson, I. Cherepanov, G. Bighin, R.E. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 125 (2020). date_created: 2020-07-26T22:01:02Z date_published: 2020-07-03T00:00:00Z date_updated: 2023-08-22T08:22:43Z day: '03' department: - _id: MiLe doi: 10.1103/PhysRevLett.125.013001 ec_funded: 1 external_id: arxiv: - '2006.02694' isi: - '000544526900006' intvolume: ' 125' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2006.02694 month: '07' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: Physical Review Letters publication_identifier: eissn: - '10797114' issn: - '00319007' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the frequency domains' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 125 year: '2020' ... --- _id: '8652' abstract: - lang: eng text: Nature creates electrons with two values of the spin projection quantum number. In certain applications, it is important to filter electrons with one spin projection from the rest. Such filtering is not trivial, since spin-dependent interactions are often weak, and cannot lead to any substantial effect. Here we propose an efficient spin filter based upon scattering from a two-dimensional crystal, which is made of aligned point magnets. The polarization of the outgoing electron flux is controlled by the crystal, and reaches maximum at specific values of the parameters. In our scheme, polarization increase is accompanied by higher reflectivity of the crystal. High transmission is feasible in scattering from a quantum cavity made of two crystals. Our findings can be used for studies of low-energy spin-dependent scattering from two-dimensional ordered structures made of magnetic atoms or aligned chiral molecules. acknowledgement: "This work has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411 (A.G.V. and A.G.). M.L. acknowledges support by the Austrian Science Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC) Starting\r\nGrant No. 801770 (ANGULON)." article_number: '178' article_processing_charge: Yes article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Ghazaryan A, Lemeshko M, Volosniev A. Filtering spins by scattering from a lattice of point magnets. Communications Physics. 2020;3. doi:10.1038/s42005-020-00445-8 apa: Ghazaryan, A., Lemeshko, M., & Volosniev, A. (2020). Filtering spins by scattering from a lattice of point magnets. Communications Physics. Springer Nature. https://doi.org/10.1038/s42005-020-00445-8 chicago: Ghazaryan, Areg, Mikhail Lemeshko, and Artem Volosniev. “Filtering Spins by Scattering from a Lattice of Point Magnets.” Communications Physics. Springer Nature, 2020. https://doi.org/10.1038/s42005-020-00445-8. ieee: A. Ghazaryan, M. Lemeshko, and A. Volosniev, “Filtering spins by scattering from a lattice of point magnets,” Communications Physics, vol. 3. Springer Nature, 2020. ista: Ghazaryan A, Lemeshko M, Volosniev A. 2020. Filtering spins by scattering from a lattice of point magnets. Communications Physics. 3, 178. mla: Ghazaryan, Areg, et al. “Filtering Spins by Scattering from a Lattice of Point Magnets.” Communications Physics, vol. 3, 178, Springer Nature, 2020, doi:10.1038/s42005-020-00445-8. short: A. Ghazaryan, M. Lemeshko, A. Volosniev, Communications Physics 3 (2020). date_created: 2020-10-13T09:48:59Z date_published: 2020-10-09T00:00:00Z date_updated: 2023-08-22T09:58:46Z day: '09' ddc: - '530' department: - _id: MiLe doi: 10.1038/s42005-020-00445-8 ec_funded: 1 external_id: isi: - '000581681000001' file: - access_level: open_access checksum: 60cd35b99f0780acffc7b6060e49ec8b content_type: application/pdf creator: dernst date_created: 2020-10-14T15:16:28Z date_updated: 2020-10-14T15:16:28Z file_id: '8662' file_name: 2020_CommPhysics_Ghazaryan.pdf file_size: 1462934 relation: main_file success: 1 file_date_updated: 2020-10-14T15:16:28Z has_accepted_license: '1' intvolume: ' 3' isi: 1 language: - iso: eng month: '10' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Communications Physics publication_identifier: issn: - 2399-3650 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Filtering spins by scattering from a lattice of point magnets tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 3 year: '2020' ... --- _id: '8699' abstract: - lang: eng text: In the high spin–orbit-coupled Sr2IrO4, the high sensitivity of the ground state to the details of the local lattice structure shows a large potential for the manipulation of the functional properties by inducing local lattice distortions. We use epitaxial strain to modify the Ir–O bond geometry in Sr2IrO4 and perform momentum-dependent resonant inelastic X-ray scattering (RIXS) at the metal and at the ligand sites to unveil the response of the low-energy elementary excitations. We observe that the pseudospin-wave dispersion for tensile-strained Sr2IrO4 films displays large softening along the [h,0] direction, while along the [h,h] direction it shows hardening. This evolution reveals a renormalization of the magnetic interactions caused by a strain-driven cross-over from anisotropic to isotropic interactions between the magnetic moments. Moreover, we detect dispersive electron–hole pair excitations which shift to lower (higher) energies upon compressive (tensile) strain, manifesting a reduction (increase) in the size of the charge gap. This behavior shows an intimate coupling between charge excitations and lattice distortions in Sr2IrO4, originating from the modified hopping elements between the t2g orbitals. Our work highlights the central role played by the lattice degrees of freedom in determining both the pseudospin and charge excitations of Sr2IrO4 and provides valuable information toward the control of the ground state of complex oxides in the presence of high spin–orbit coupling. acknowledgement: 'We gratefully acknowledge C. Sahle for experimental support at the ID20 beamline of the ESRF. The soft X-ray experiments were carried out at the ADRESS beamline of the Swiss Light Source, Paul Scherrer Institut (PSI). E. Paris and T.S. thank X. Lu and C. Monney for valuable discussions. The work at PSI is supported by the Swiss National Science Foundation (SNSF) through Project 200021_178867, the NCCR (National Centre of Competence in Research) MARVEL (Materials’ Revolution: Computational Design and Discovery of Novel Materials) and the Sinergia network Mott Physics Beyond the Heisenberg Model (MPBH) (SNSF Research Grants CRSII2_160765/1 and CRSII2_141962). K.W. acknowledges support by the Narodowe Centrum Nauki Projects 2016/22/E/ST3/00560 and 2016/23/B/ST3/00839. E.M.P. and M.N. acknowledge funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreements 754411 and 701647, respectively. M.R. was supported by the Swiss National Science Foundation under Project 200021 – 182695. This research used resources of the APS, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract DE-AC02-06CH11357.' article_processing_charge: No article_type: original author: - first_name: Eugenio full_name: Paris, Eugenio last_name: Paris - first_name: Yi full_name: Tseng, Yi last_name: Tseng - first_name: Ekaterina full_name: Paerschke, Ekaterina id: 8275014E-6063-11E9-9B7F-6338E6697425 last_name: Paerschke orcid: 0000-0003-0853-8182 - first_name: Wenliang full_name: Zhang, Wenliang last_name: Zhang - first_name: Mary H full_name: Upton, Mary H last_name: Upton - first_name: Anna full_name: Efimenko, Anna last_name: Efimenko - first_name: Katharina full_name: Rolfs, Katharina last_name: Rolfs - first_name: Daniel E full_name: McNally, Daniel E last_name: McNally - first_name: Laura full_name: Maurel, Laura last_name: Maurel - first_name: Muntaser full_name: Naamneh, Muntaser last_name: Naamneh - first_name: Marco full_name: Caputo, Marco last_name: Caputo - first_name: Vladimir N full_name: Strocov, Vladimir N last_name: Strocov - first_name: Zhiming full_name: Wang, Zhiming last_name: Wang - first_name: Diego full_name: Casa, Diego last_name: Casa - first_name: Christof W full_name: Schneider, Christof W last_name: Schneider - first_name: Ekaterina full_name: Pomjakushina, Ekaterina last_name: Pomjakushina - first_name: Krzysztof full_name: Wohlfeld, Krzysztof last_name: Wohlfeld - first_name: Milan full_name: Radovic, Milan last_name: Radovic - first_name: Thorsten full_name: Schmitt, Thorsten last_name: Schmitt citation: ama: Paris E, Tseng Y, Paerschke E, et al. Strain engineering of the charge and spin-orbital interactions in Sr2IrO4. Proceedings of the National Academy of Sciences of the United States of America. 2020;117(40):24764-24770. doi:10.1073/pnas.2012043117 apa: Paris, E., Tseng, Y., Paerschke, E., Zhang, W., Upton, M. H., Efimenko, A., … Schmitt, T. (2020). Strain engineering of the charge and spin-orbital interactions in Sr2IrO4. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2012043117 chicago: Paris, Eugenio, Yi Tseng, Ekaterina Paerschke, Wenliang Zhang, Mary H Upton, Anna Efimenko, Katharina Rolfs, et al. “Strain Engineering of the Charge and Spin-Orbital Interactions in Sr2IrO4.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2012043117. ieee: E. Paris et al., “Strain engineering of the charge and spin-orbital interactions in Sr2IrO4,” Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 40. National Academy of Sciences, pp. 24764–24770, 2020. ista: Paris E, Tseng Y, Paerschke E, Zhang W, Upton MH, Efimenko A, Rolfs K, McNally DE, Maurel L, Naamneh M, Caputo M, Strocov VN, Wang Z, Casa D, Schneider CW, Pomjakushina E, Wohlfeld K, Radovic M, Schmitt T. 2020. Strain engineering of the charge and spin-orbital interactions in Sr2IrO4. Proceedings of the National Academy of Sciences of the United States of America. 117(40), 24764–24770. mla: Paris, Eugenio, et al. “Strain Engineering of the Charge and Spin-Orbital Interactions in Sr2IrO4.” Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 40, National Academy of Sciences, 2020, pp. 24764–70, doi:10.1073/pnas.2012043117. short: E. Paris, Y. Tseng, E. Paerschke, W. Zhang, M.H. Upton, A. Efimenko, K. Rolfs, D.E. McNally, L. Maurel, M. Naamneh, M. Caputo, V.N. Strocov, Z. Wang, D. Casa, C.W. Schneider, E. Pomjakushina, K. Wohlfeld, M. Radovic, T. Schmitt, Proceedings of the National Academy of Sciences of the United States of America 117 (2020) 24764–24770. date_created: 2020-10-25T23:01:17Z date_published: 2020-10-06T00:00:00Z date_updated: 2023-08-22T12:11:52Z day: '06' ddc: - '530' department: - _id: MiLe doi: 10.1073/pnas.2012043117 ec_funded: 1 external_id: arxiv: - '2009.12262' isi: - '000579059100029' pmid: - '32958669' file: - access_level: open_access checksum: 1638fa36b442e2868576c6dd7d6dc505 content_type: application/pdf creator: cziletti date_created: 2020-10-28T11:53:12Z date_updated: 2020-10-28T11:53:12Z file_id: '8715' file_name: 2020_PNAS_Paris.pdf file_size: 1176522 relation: main_file success: 1 file_date_updated: 2020-10-28T11:53:12Z has_accepted_license: '1' intvolume: ' 117' isi: 1 issue: '40' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: 24764-24770 pmid: 1 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - '10916490' issn: - '00278424' publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Strain engineering of the charge and spin-orbital interactions in Sr2IrO4 tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 117 year: '2020' ... --- _id: '7968' abstract: - lang: eng text: Organic materials are known to feature long spin-diffusion times, originating in a generally small spin–orbit coupling observed in these systems. From that perspective, chiral molecules acting as efficient spin selectors pose a puzzle that attracted a lot of attention in recent years. Here, we revisit the physical origins of chiral-induced spin selectivity (CISS) and propose a simple analytic minimal model to describe it. The model treats a chiral molecule as an anisotropic wire with molecular dipole moments aligned arbitrarily with respect to the wire’s axes and is therefore quite general. Importantly, it shows that the helical structure of the molecule is not necessary to observe CISS and other chiral nonhelical molecules can also be considered as potential candidates for the CISS effect. We also show that the suggested simple model captures the main characteristics of CISS observed in the experiment, without the need for additional constraints employed in the previous studies. The results pave the way for understanding other related physical phenomena where the CISS effect plays an essential role. article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Yossi full_name: Paltiel, Yossi last_name: Paltiel - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Ghazaryan A, Paltiel Y, Lemeshko M. Analytic model of chiral-induced spin selectivity. The Journal of Physical Chemistry C. 2020;124(21):11716-11721. doi:10.1021/acs.jpcc.0c02584 apa: Ghazaryan, A., Paltiel, Y., & Lemeshko, M. (2020). Analytic model of chiral-induced spin selectivity. The Journal of Physical Chemistry C. American Chemical Society. https://doi.org/10.1021/acs.jpcc.0c02584 chicago: Ghazaryan, Areg, Yossi Paltiel, and Mikhail Lemeshko. “Analytic Model of Chiral-Induced Spin Selectivity.” The Journal of Physical Chemistry C. American Chemical Society, 2020. https://doi.org/10.1021/acs.jpcc.0c02584. ieee: A. Ghazaryan, Y. Paltiel, and M. Lemeshko, “Analytic model of chiral-induced spin selectivity,” The Journal of Physical Chemistry C, vol. 124, no. 21. American Chemical Society, pp. 11716–11721, 2020. ista: Ghazaryan A, Paltiel Y, Lemeshko M. 2020. Analytic model of chiral-induced spin selectivity. The Journal of Physical Chemistry C. 124(21), 11716–11721. mla: Ghazaryan, Areg, et al. “Analytic Model of Chiral-Induced Spin Selectivity.” The Journal of Physical Chemistry C, vol. 124, no. 21, American Chemical Society, 2020, pp. 11716–21, doi:10.1021/acs.jpcc.0c02584. short: A. Ghazaryan, Y. Paltiel, M. Lemeshko, The Journal of Physical Chemistry C 124 (2020) 11716–11721. date_created: 2020-06-16T14:29:59Z date_published: 2020-05-04T00:00:00Z date_updated: 2023-09-05T12:07:15Z day: '04' ddc: - '530' department: - _id: MiLe doi: 10.1021/acs.jpcc.0c02584 ec_funded: 1 external_id: isi: - '000614616200006' file: - access_level: open_access checksum: 25932bb1d0b0a955be0bea4d17facd49 content_type: application/pdf creator: kschuh date_created: 2020-10-20T14:39:47Z date_updated: 2020-10-20T14:39:47Z file_id: '8683' file_name: 2020_PhysChemC_Ghazaryan.pdf file_size: 1543429 relation: main_file success: 1 file_date_updated: 2020-10-20T14:39:47Z has_accepted_license: '1' intvolume: ' 124' isi: 1 issue: '21' language: - iso: eng month: '05' oa: 1 oa_version: Published Version page: 11716-11721 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: The Journal of Physical Chemistry C publication_identifier: eissn: - 1932-7455 issn: - 1932-7447 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Analytic model of chiral-induced spin selectivity tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 124 year: '2020' ... --- _id: '8588' abstract: - lang: eng text: Dipolar (or spatially indirect) excitons (IXs) in semiconductor double quantum well (DQW) subjected to an electric field are neutral species with a dipole moment oriented perpendicular to the DQW plane. Here, we theoretically study interactions between IXs in stacked DQW bilayers, where the dipolar coupling can be either attractive or repulsive depending on the relative positions of the particles. By using microscopic band structure calculations to determine the electronic states forming the excitons, we show that the attractive dipolar interaction between stacked IXs deforms their electronic wave function, thereby increasing the inter-DQW interaction energy and making the IX even more electrically polarizable. Many-particle interaction effects are addressed by considering the coupling between a single IX in one of the DQWs to a cloud of IXs in the other DQW, which is modeled either as a closed-packed lattice or as a continuum IX fluid. We find that the lattice model yields IX interlayer binding energies decreasing with increasing lattice density. This behavior is due to the dominating role of the intra-DQW dipolar repulsion, which prevents more than one exciton from entering the attractive region of the inter-DQW coupling. Finally, both models shows that the single IX distorts the distribution of IXs in the adjacent DQW, thus inducing the formation of an IX dipolar polaron (dipolaron). While the interlayer binding energy reduces with IX density for lattice dipolarons, the continuous polaron model predicts a nonmonotonous dependence on density in semiquantitative agreement with a recent experimental study [cf. Hubert et al., Phys. Rev. X 9, 021026 (2019)]. acknowledgement: "We thank W. Kaganer for discussions and for comment on the manuscript. We acknowledge the financial support from the German-Israeli Foundation (GIF), grant agreement I-1277-303.10/2014. M.L. acknowledges support by the Austrian Science Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). A.G. acknowledges support by the European Unions Horizon 2020 research and innovation\r\nprogram under the Marie Skodowska-Curie grant agreement No 754411. P.V.S acknowledges financial support\r\nfrom the Deutsche Forschungsgemeinschaft (DFG) under\r\nProject No. SA 598/12-1." article_number: '045307' article_processing_charge: No article_type: original author: - first_name: C. full_name: Hubert, C. last_name: Hubert - first_name: K. full_name: Cohen, K. last_name: Cohen - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: R. full_name: Rapaport, R. last_name: Rapaport - first_name: P. V. full_name: Santos, P. V. last_name: Santos citation: ama: Hubert C, Cohen K, Ghazaryan A, Lemeshko M, Rapaport R, Santos PV. Attractive interactions, molecular complexes, and polarons in coupled dipolar exciton fluids. Physical Review B. 2020;102(4). doi:10.1103/physrevb.102.045307 apa: Hubert, C., Cohen, K., Ghazaryan, A., Lemeshko, M., Rapaport, R., & Santos, P. V. (2020). Attractive interactions, molecular complexes, and polarons in coupled dipolar exciton fluids. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.102.045307 chicago: Hubert, C., K. Cohen, Areg Ghazaryan, Mikhail Lemeshko, R. Rapaport, and P. V. Santos. “Attractive Interactions, Molecular Complexes, and Polarons in Coupled Dipolar Exciton Fluids.” Physical Review B. American Physical Society, 2020. https://doi.org/10.1103/physrevb.102.045307. ieee: C. Hubert, K. Cohen, A. Ghazaryan, M. Lemeshko, R. Rapaport, and P. V. Santos, “Attractive interactions, molecular complexes, and polarons in coupled dipolar exciton fluids,” Physical Review B, vol. 102, no. 4. American Physical Society, 2020. ista: Hubert C, Cohen K, Ghazaryan A, Lemeshko M, Rapaport R, Santos PV. 2020. Attractive interactions, molecular complexes, and polarons in coupled dipolar exciton fluids. Physical Review B. 102(4), 045307. mla: Hubert, C., et al. “Attractive Interactions, Molecular Complexes, and Polarons in Coupled Dipolar Exciton Fluids.” Physical Review B, vol. 102, no. 4, 045307, American Physical Society, 2020, doi:10.1103/physrevb.102.045307. short: C. Hubert, K. Cohen, A. Ghazaryan, M. Lemeshko, R. Rapaport, P.V. Santos, Physical Review B 102 (2020). date_created: 2020-09-30T10:33:43Z date_published: 2020-07-21T00:00:00Z date_updated: 2023-09-05T12:12:10Z day: '21' department: - _id: MiLe doi: 10.1103/physrevb.102.045307 ec_funded: 1 external_id: arxiv: - '1910.06015' isi: - '000550579100004' intvolume: ' 102' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1910.06015 month: '07' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Attractive interactions, molecular complexes, and polarons in coupled dipolar exciton fluids type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 102 year: '2020' ... --- _id: '8769' abstract: - lang: eng text: One of the hallmarks of quantum statistics, tightly entwined with the concept of topological phases of matter, is the prediction of anyons. Although anyons are predicted to be realized in certain fractional quantum Hall systems, they have not yet been unambiguously detected in experiment. Here we introduce a simple quantum impurity model, where bosonic or fermionic impurities turn into anyons as a consequence of their interaction with the surrounding many-particle bath. A cloud of phonons dresses each impurity in such a way that it effectively attaches fluxes or vortices to it and thereby converts it into an Abelian anyon. The corresponding quantum impurity model, first, provides a different approach to the numerical solution of the many-anyon problem, along with a concrete perspective of anyons as emergent quasiparticles built from composite bosons or fermions. More importantly, the model paves the way toward realizing anyons using impurities in crystal lattices as well as ultracold gases. In particular, we consider two heavy electrons interacting with a two-dimensional lattice crystal in a magnetic field, and show that when the impurity-bath system is rotated at the cyclotron frequency, impurities behave as anyons as a consequence of the angular momentum exchange between the impurities and the bath. A possible experimental realization is proposed by identifying the statistics parameter in terms of the mean-square distance of the impurities and the magnetization of the impurity-bath system, both of which are accessible to experiment. Another proposed application is impurities immersed in a two-dimensional weakly interacting Bose gas. acknowledgement: "We are grateful to M. Correggi, A. Deuchert, and P. Schmelcher for valuable discussions. We also thank the anonymous referees for helping to clarify a few important points in the experimental realization. A.G. acknowledges support by the European Unions Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement\r\nNo 754411. D.L. acknowledges financial support from the Goran Gustafsson Foundation (grant no. 1804) and LMU Munich. R.S., M.L., and N.R. gratefully acknowledge financial support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreements No 694227, No 801770, and No 758620, respectively)." article_number: '144109' article_processing_charge: No article_type: original author: - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: D. full_name: Lundholm, D. last_name: Lundholm - first_name: N. full_name: Rougerie, N. last_name: Rougerie - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 citation: ama: Yakaboylu E, Ghazaryan A, Lundholm D, Rougerie N, Lemeshko M, Seiringer R. Quantum impurity model for anyons. Physical Review B. 2020;102(14). doi:10.1103/physrevb.102.144109 apa: Yakaboylu, E., Ghazaryan, A., Lundholm, D., Rougerie, N., Lemeshko, M., & Seiringer, R. (2020). Quantum impurity model for anyons. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.102.144109 chicago: Yakaboylu, Enderalp, Areg Ghazaryan, D. Lundholm, N. Rougerie, Mikhail Lemeshko, and Robert Seiringer. “Quantum Impurity Model for Anyons.” Physical Review B. American Physical Society, 2020. https://doi.org/10.1103/physrevb.102.144109. ieee: E. Yakaboylu, A. Ghazaryan, D. Lundholm, N. Rougerie, M. Lemeshko, and R. Seiringer, “Quantum impurity model for anyons,” Physical Review B, vol. 102, no. 14. American Physical Society, 2020. ista: Yakaboylu E, Ghazaryan A, Lundholm D, Rougerie N, Lemeshko M, Seiringer R. 2020. Quantum impurity model for anyons. Physical Review B. 102(14), 144109. mla: Yakaboylu, Enderalp, et al. “Quantum Impurity Model for Anyons.” Physical Review B, vol. 102, no. 14, 144109, American Physical Society, 2020, doi:10.1103/physrevb.102.144109. short: E. Yakaboylu, A. Ghazaryan, D. Lundholm, N. Rougerie, M. Lemeshko, R. Seiringer, Physical Review B 102 (2020). date_created: 2020-11-18T07:34:17Z date_published: 2020-10-01T00:00:00Z date_updated: 2023-09-05T12:12:30Z day: '01' department: - _id: MiLe - _id: RoSe doi: 10.1103/physrevb.102.144109 ec_funded: 1 external_id: arxiv: - '1912.07890' isi: - '000582563300001' intvolume: ' 102' isi: 1 issue: '14' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.07890 month: '10' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Quantum impurity model for anyons type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 102 year: '2020' ... --- _id: '8587' abstract: - lang: eng text: Inspired by the possibility to experimentally manipulate and enhance chemical reactivity in helium nanodroplets, we investigate the effective interaction and the resulting correlations between two diatomic molecules immersed in a bath of bosons. By analogy with the bipolaron, we introduce the biangulon quasiparticle describing two rotating molecules that align with respect to each other due to the effective attractive interaction mediated by the excitations of the bath. We study this system in different parameter regimes and apply several theoretical approaches to describe its properties. Using a Born–Oppenheimer approximation, we investigate the dependence of the effective intermolecular interaction on the rotational state of the two molecules. In the strong-coupling regime, a product-state ansatz shows that the molecules tend to have a strong alignment in the ground state. To investigate the system in the weak-coupling regime, we apply a one-phonon excitation variational ansatz, which allows us to access the energy spectrum. In comparison to the angulon quasiparticle, the biangulon shows shifted angulon instabilities and an additional spectral instability, where resonant angular momentum transfer between the molecules and the bath takes place. These features are proposed as an experimentally observable signature for the formation of the biangulon quasiparticle. Finally, by using products of single angulon and bare impurity wave functions as basis states, we introduce a diagonalization scheme that allows us to describe the transition from two separated angulons to a biangulon as a function of the distance between the two molecules. acknowledgement: We are grateful to Areg Ghazaryan for valuable discussions. M.L. acknowledges support from the Austrian Science Fund (FWF) under Project No. P29902-N27 and from the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). G.B. acknowledges support from the Austrian Science Fund (FWF) under Project No. M2461-N27. A.D. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the European Research Council (ERC) Grant Agreement No. 694227 and under the Marie Sklodowska-Curie Grant Agreement No. 836146. R.S. was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC-2111 – 390814868. article_number: '164302' article_processing_charge: No article_type: original author: - first_name: Xiang full_name: Li, Xiang id: 4B7E523C-F248-11E8-B48F-1D18A9856A87 last_name: Li - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Richard full_name: Schmidt, Richard last_name: Schmidt - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Andreas full_name: Deuchert, Andreas id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87 last_name: Deuchert orcid: 0000-0003-3146-6746 citation: ama: Li X, Yakaboylu E, Bighin G, Schmidt R, Lemeshko M, Deuchert A. Intermolecular forces and correlations mediated by a phonon bath. The Journal of Chemical Physics. 2020;152(16). doi:10.1063/1.5144759 apa: Li, X., Yakaboylu, E., Bighin, G., Schmidt, R., Lemeshko, M., & Deuchert, A. (2020). Intermolecular forces and correlations mediated by a phonon bath. The Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/1.5144759 chicago: Li, Xiang, Enderalp Yakaboylu, Giacomo Bighin, Richard Schmidt, Mikhail Lemeshko, and Andreas Deuchert. “Intermolecular Forces and Correlations Mediated by a Phonon Bath.” The Journal of Chemical Physics. AIP Publishing, 2020. https://doi.org/10.1063/1.5144759. ieee: X. Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, and A. Deuchert, “Intermolecular forces and correlations mediated by a phonon bath,” The Journal of Chemical Physics, vol. 152, no. 16. AIP Publishing, 2020. ista: Li X, Yakaboylu E, Bighin G, Schmidt R, Lemeshko M, Deuchert A. 2020. Intermolecular forces and correlations mediated by a phonon bath. The Journal of Chemical Physics. 152(16), 164302. mla: Li, Xiang, et al. “Intermolecular Forces and Correlations Mediated by a Phonon Bath.” The Journal of Chemical Physics, vol. 152, no. 16, 164302, AIP Publishing, 2020, doi:10.1063/1.5144759. short: X. Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, A. Deuchert, The Journal of Chemical Physics 152 (2020). date_created: 2020-09-30T10:33:17Z date_published: 2020-04-27T00:00:00Z date_updated: 2023-09-07T13:16:42Z day: '27' department: - _id: MiLe - _id: RoSe doi: 10.1063/1.5144759 ec_funded: 1 external_id: arxiv: - '1912.02658' isi: - '000530448300001' intvolume: ' 152' isi: 1 issue: '16' keyword: - Physical and Theoretical Chemistry - General Physics and Astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.02658 month: '04' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems publication: The Journal of Chemical Physics publication_identifier: eissn: - 1089-7690 issn: - 0021-9606 publication_status: published publisher: AIP Publishing quality_controlled: '1' related_material: record: - id: '8958' relation: dissertation_contains status: public status: public title: Intermolecular forces and correlations mediated by a phonon bath type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 152 year: '2020' ... --- _id: '8644' abstract: - lang: eng text: Determining the phase diagram of systems consisting of smaller subsystems 'connected' via a tunable coupling is a challenging task relevant for a variety of physical settings. A general question is whether new phases, not present in the uncoupled limit, may arise. We use machine learning and a suitable quasidistance between different points of the phase diagram to study layered spin models, in which the spin variables constituting each of the uncoupled systems (to which we refer as layers) are coupled to each other via an interlayer coupling. In such systems, in general, composite order parameters involving spins of different layers may emerge as a consequence of the interlayer coupling. We focus on the layered Ising and Ashkin–Teller models as a paradigmatic case study, determining their phase diagram via the application of a machine learning algorithm to the Monte Carlo data. Remarkably our technique is able to correctly characterize all the system phases also in the case of hidden order parameters, i.e. order parameters whose expression in terms of the microscopic configurations would require additional preprocessing of the data fed to the algorithm. We correctly retrieve the three known phases of the Ashkin–Teller model with ferromagnetic couplings, including the phase described by a composite order parameter. For the bilayer and trilayer Ising models the phases we find are only the ferromagnetic and the paramagnetic ones. Within the approach we introduce, owing to the construction of convolutional neural networks, naturally suitable for layered image-like data with arbitrary number of layers, no preprocessing of the Monte Carlo data is needed, also with regard to its spatial structure. The physical meaning of our results is discussed and compared with analytical data, where available. Yet, the method can be used without any a priori knowledge of the phases one seeks to find and can be applied to other models and structures. acknowledgement: We thank Gesualdo Delfino, Michele Fabrizio, Piero Ferrarese, Robert Konik, Christoph Lampert and Mikhail Lemeshko for stimulating discussions at various stages of this work. WR has received funding from the EU Horizon 2020 program under the Marie Skłodowska-Curie Grant Agreement No. 665385 and is a recipient of a DOC Fellowship of the Austrian Academy of Sciences. GB acknowledges support from the Austrian Science Fund (FWF), under project No. M2641-N27. ND acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via Collaborative Research Center SFB 1225 (ISOQUANT)--project-id 273811115--and under Germany's Excellence Strategy 'EXC-2181/1-390900948' (the Heidelberg STRUCTURES Excellence Cluster). article_number: '093026' article_processing_charge: No article_type: original author: - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 - first_name: N full_name: Defenu, N last_name: Defenu - first_name: S full_name: Chiacchiera, S last_name: Chiacchiera - first_name: A full_name: Trombettoni, A last_name: Trombettoni - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 citation: ama: Rzadkowski W, Defenu N, Chiacchiera S, Trombettoni A, Bighin G. Detecting composite orders in layered models via machine learning. New Journal of Physics. 2020;22(9). doi:10.1088/1367-2630/abae44 apa: Rzadkowski, W., Defenu, N., Chiacchiera, S., Trombettoni, A., & Bighin, G. (2020). Detecting composite orders in layered models via machine learning. New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/abae44 chicago: Rzadkowski, Wojciech, N Defenu, S Chiacchiera, A Trombettoni, and Giacomo Bighin. “Detecting Composite Orders in Layered Models via Machine Learning.” New Journal of Physics. IOP Publishing, 2020. https://doi.org/10.1088/1367-2630/abae44. ieee: W. Rzadkowski, N. Defenu, S. Chiacchiera, A. Trombettoni, and G. Bighin, “Detecting composite orders in layered models via machine learning,” New Journal of Physics, vol. 22, no. 9. IOP Publishing, 2020. ista: Rzadkowski W, Defenu N, Chiacchiera S, Trombettoni A, Bighin G. 2020. Detecting composite orders in layered models via machine learning. New Journal of Physics. 22(9), 093026. mla: Rzadkowski, Wojciech, et al. “Detecting Composite Orders in Layered Models via Machine Learning.” New Journal of Physics, vol. 22, no. 9, 093026, IOP Publishing, 2020, doi:10.1088/1367-2630/abae44. short: W. Rzadkowski, N. Defenu, S. Chiacchiera, A. Trombettoni, G. Bighin, New Journal of Physics 22 (2020). date_created: 2020-10-11T22:01:14Z date_published: 2020-09-01T00:00:00Z date_updated: 2023-09-07T13:44:16Z day: '01' ddc: - '530' department: - _id: MiLe doi: 10.1088/1367-2630/abae44 ec_funded: 1 external_id: isi: - '000573298000001' file: - access_level: open_access checksum: c9238fff422e7a957c3a0d559f756b3a content_type: application/pdf creator: dernst date_created: 2020-10-12T12:18:47Z date_updated: 2020-10-12T12:18:47Z file_id: '8650' file_name: 2020_NewJournalPhysics_Rzdkowski.pdf file_size: 2725143 relation: main_file success: 1 file_date_updated: 2020-10-12T12:18:47Z has_accepted_license: '1' intvolume: ' 22' isi: 1 issue: '9' language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 05A235A0-7A3F-11EA-A408-12923DDC885E grant_number: '25681' name: Analytic and machine learning approaches to composite quantum impurities - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities publication: New Journal of Physics publication_identifier: issn: - '13672630' publication_status: published publisher: IOP Publishing quality_controlled: '1' related_material: record: - id: '10759' relation: dissertation_contains status: public scopus_import: '1' status: public title: Detecting composite orders in layered models via machine learning tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 22 year: '2020' ... --- _id: '8958' abstract: - lang: eng text: "The oft-quoted dictum by Arthur Schawlow: ``A diatomic molecule has one atom too many'' has been disavowed. Inspired by the possibility to experimentally manipulate and enhance chemical reactivity in helium nanodroplets, we investigate the rotation of coupled cold molecules in the presence of a many-body environment.\r\nIn this thesis, we introduce new variational approaches to quantum impurities and apply them to the Fröhlich polaron - a quasiparticle formed out of an electron (or other point-like impurity) in a polar medium, and to the angulon - a quasiparticle formed out of a rotating molecule in a bosonic bath.\r\nWith this theoretical toolbox, we reveal the self-localization transition for the angulon quasiparticle. We show that, unlike for polarons, self-localization of angulons occurs at finite impurity-bath coupling already at the mean-field level. The transition is accompanied by the spherical-symmetry breaking of the angulon ground state and a discontinuity in the first derivative of the ground-state energy. Moreover, the type of symmetry breaking is dictated by the symmetry of the microscopic impurity-bath interaction, which leads to a number of distinct self-localized states. \r\nFor the system containing multiple impurities, by analogy with the bipolaron, we introduce the biangulon quasiparticle describing two rotating molecules that align with respect to each other due to the effective attractive interaction mediated by the excitations of the bath. We study this system from the strong-coupling regime to the weak molecule-bath interaction regime. We show that the molecules tend to have a strong alignment in the ground state, the biangulon shows shifted angulon instabilities and an additional spectral instability, where resonant angular momentum transfer between the molecules and the bath takes place. Finally, we introduce a diagonalization scheme that allows us to describe the transition from two separated angulons to a biangulon as a function of the distance between the two molecules." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Xiang full_name: Li, Xiang id: 4B7E523C-F248-11E8-B48F-1D18A9856A87 last_name: Li citation: ama: Li X. Rotation of coupled cold molecules in the presence of a many-body environment. 2020. doi:10.15479/AT:ISTA:8958 apa: Li, X. (2020). Rotation of coupled cold molecules in the presence of a many-body environment. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8958 chicago: Li, Xiang. “Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8958. ieee: X. Li, “Rotation of coupled cold molecules in the presence of a many-body environment,” Institute of Science and Technology Austria, 2020. ista: Li X. 2020. Rotation of coupled cold molecules in the presence of a many-body environment. Institute of Science and Technology Austria. mla: Li, Xiang. Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8958. short: X. Li, Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment, Institute of Science and Technology Austria, 2020. date_created: 2020-12-21T09:44:30Z date_published: 2020-12-21T00:00:00Z date_updated: 2023-09-20T11:30:58Z day: '21' ddc: - '539' degree_awarded: PhD department: - _id: MiLe doi: 10.15479/AT:ISTA:8958 ec_funded: 1 file: - access_level: open_access checksum: 3994c54a1241451d561db1d4f43bad30 content_type: application/pdf creator: xli date_created: 2020-12-22T10:55:56Z date_updated: 2020-12-22T10:55:56Z file_id: '8967' file_name: THESIS_Xiang_Li.pdf file_size: 3622305 relation: main_file success: 1 - access_level: closed checksum: 0954ecfc5554c05615c14de803341f00 content_type: application/x-zip-compressed creator: xli date_created: 2020-12-22T10:56:03Z date_updated: 2020-12-30T07:18:03Z file_id: '8968' file_name: THESIS_Xiang_Li.zip file_size: 4018859 relation: source_file file_date_updated: 2020-12-30T07:18:03Z has_accepted_license: '1' language: - iso: eng month: '12' oa: 1 oa_version: Published Version page: '125' project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '5886' relation: part_of_dissertation status: public - id: '8587' relation: part_of_dissertation status: public - id: '1120' relation: part_of_dissertation status: public status: public supervisor: - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 title: Rotation of coupled cold molecules in the presence of a many-body environment type: dissertation user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2020' ... --- _id: '7956' abstract: - lang: eng text: When short-range attractions are combined with long-range repulsions in colloidal particle systems, complex microphases can emerge. Here, we study a system of isotropic particles, which can form lamellar structures or a disordered fluid phase when temperature is varied. We show that, at equilibrium, the lamellar structure crystallizes, while out of equilibrium, the system forms a variety of structures at different shear rates and temperatures above melting. The shear-induced ordering is analyzed by means of principal component analysis and artificial neural networks, which are applied to data of reduced dimensionality. Our results reveal the possibility of inducing ordering by shear, potentially providing a feasible route to the fabrication of ordered lamellar structures from isotropic particles. article_number: '204905' article_processing_charge: No article_type: original author: - first_name: J. full_name: Pȩkalski, J. last_name: Pȩkalski - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 - first_name: A. Z. full_name: Panagiotopoulos, A. Z. last_name: Panagiotopoulos citation: ama: 'Pȩkalski J, Rzadkowski W, Panagiotopoulos AZ. Shear-induced ordering in systems with competing interactions: A machine learning study. The Journal of chemical physics. 2020;152(20). doi:10.1063/5.0005194' apa: 'Pȩkalski, J., Rzadkowski, W., & Panagiotopoulos, A. Z. (2020). Shear-induced ordering in systems with competing interactions: A machine learning study. The Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/5.0005194' chicago: 'Pȩkalski, J., Wojciech Rzadkowski, and A. Z. Panagiotopoulos. “Shear-Induced Ordering in Systems with Competing Interactions: A Machine Learning Study.” The Journal of Chemical Physics. AIP Publishing, 2020. https://doi.org/10.1063/5.0005194.' ieee: 'J. Pȩkalski, W. Rzadkowski, and A. Z. Panagiotopoulos, “Shear-induced ordering in systems with competing interactions: A machine learning study,” The Journal of chemical physics, vol. 152, no. 20. AIP Publishing, 2020.' ista: 'Pȩkalski J, Rzadkowski W, Panagiotopoulos AZ. 2020. Shear-induced ordering in systems with competing interactions: A machine learning study. The Journal of chemical physics. 152(20), 204905.' mla: 'Pȩkalski, J., et al. “Shear-Induced Ordering in Systems with Competing Interactions: A Machine Learning Study.” The Journal of Chemical Physics, vol. 152, no. 20, 204905, AIP Publishing, 2020, doi:10.1063/5.0005194.' short: J. Pȩkalski, W. Rzadkowski, A.Z. Panagiotopoulos, The Journal of Chemical Physics 152 (2020). date_created: 2020-06-14T22:00:49Z date_published: 2020-05-29T00:00:00Z date_updated: 2024-02-28T13:00:28Z day: '29' department: - _id: MiLe doi: 10.1063/5.0005194 ec_funded: 1 external_id: arxiv: - '2002.07294' isi: - '000537900300001' intvolume: ' 152' isi: 1 issue: '20' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1063/5.0005194 month: '05' oa: 1 oa_version: Published Version project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: The Journal of chemical physics publication_identifier: eissn: - '10897690' publication_status: published publisher: AIP Publishing quality_controlled: '1' related_material: record: - id: '10759' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'Shear-induced ordering in systems with competing interactions: A machine learning study' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 152 year: '2020' ... --- _id: '7428' abstract: - lang: eng text: In the superconducting regime of FeTe(1−x)Sex, there exist two types of vortices which are distinguished by the presence or absence of zero-energy states in their core. To understand their origin, we examine the interplay of Zeeman coupling and superconducting pairings in three-dimensional metals with band inversion. Weak Zeeman fields are found to suppress intraorbital spin-singlet pairing, known to localize the states at the ends of the vortices on the surface. On the other hand, an orbital-triplet pairing is shown to be stable against Zeeman interactions, but leads to delocalized zero-energy Majorana modes which extend through the vortex. In contrast, the finite-energy vortex modes remain localized at the vortex ends even when the pairing is of orbital-triplet form. Phenomenologically, this manifests as an observed disappearance of zero-bias peaks within the cores of topological vortices upon an increase of the applied magnetic field. The presence of magnetic impurities in FeTe(1−x)Sex, which are attracted to the vortices, would lead to such Zeeman-induced delocalization of Majorana modes in a fraction of vortices that capture a large enough number of magnetic impurities. Our results provide an explanation for the dichotomy between topological and nontopological vortices recently observed in FeTe(1−x)Sex. article_number: '020504' article_processing_charge: No article_type: original author: - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: P. L.S. full_name: Lopes, P. L.S. last_name: Lopes - first_name: Pavan full_name: Hosur, Pavan last_name: Hosur - first_name: Matthew J. full_name: Gilbert, Matthew J. last_name: Gilbert - first_name: Pouyan full_name: Ghaemi, Pouyan last_name: Ghaemi citation: ama: Ghazaryan A, Lopes PLS, Hosur P, Gilbert MJ, Ghaemi P. Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors. Physical Review B. 2020;101(2). doi:10.1103/PhysRevB.101.020504 apa: Ghazaryan, A., Lopes, P. L. S., Hosur, P., Gilbert, M. J., & Ghaemi, P. (2020). Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.101.020504 chicago: Ghazaryan, Areg, P. L.S. Lopes, Pavan Hosur, Matthew J. Gilbert, and Pouyan Ghaemi. “Effect of Zeeman Coupling on the Majorana Vortex Modes in Iron-Based Topological Superconductors.” Physical Review B. American Physical Society, 2020. https://doi.org/10.1103/PhysRevB.101.020504. ieee: A. Ghazaryan, P. L. S. Lopes, P. Hosur, M. J. Gilbert, and P. Ghaemi, “Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors,” Physical Review B, vol. 101, no. 2. American Physical Society, 2020. ista: Ghazaryan A, Lopes PLS, Hosur P, Gilbert MJ, Ghaemi P. 2020. Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors. Physical Review B. 101(2), 020504. mla: Ghazaryan, Areg, et al. “Effect of Zeeman Coupling on the Majorana Vortex Modes in Iron-Based Topological Superconductors.” Physical Review B, vol. 101, no. 2, 020504, American Physical Society, 2020, doi:10.1103/PhysRevB.101.020504. short: A. Ghazaryan, P.L.S. Lopes, P. Hosur, M.J. Gilbert, P. Ghaemi, Physical Review B 101 (2020). date_created: 2020-02-02T23:01:01Z date_published: 2020-01-13T00:00:00Z date_updated: 2024-02-28T13:11:13Z day: '13' department: - _id: MiLe doi: 10.1103/PhysRevB.101.020504 external_id: arxiv: - '1907.02077' isi: - '000506843500001' intvolume: ' 101' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.02077 month: '01' oa: 1 oa_version: Preprint publication: Physical Review B publication_identifier: eissn: - '24699969' issn: - '24699950' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 101 year: '2020' ... --- _id: '8741' abstract: - lang: eng text: "In ecology, climate and other fields, (sub)systems have been identified that can transition into a qualitatively different state when a critical threshold or tipping point in a driving process is crossed. An understanding of those tipping elements is of great interest given the increasing influence of humans on the biophysical Earth system. Complex interactions exist between tipping elements, e.g. physical mechanisms connect subsystems of the climate system. Based on earlier work on such coupled nonlinear systems, we systematically assessed the qualitative long-term behaviour of interacting tipping elements. We developed an understanding of the consequences of interactions\r\non the tipping behaviour allowing for tipping cascades to emerge under certain conditions. The (narrative) application of\r\nthese qualitative results to real-world examples of interacting tipping elements indicates that tipping cascades with profound consequences may occur: the interacting Greenland ice sheet and thermohaline ocean circulation might tip before the tipping points of the isolated subsystems are crossed. The eutrophication of the first lake in a lake chain might propagate through the following lakes without a crossing of their individual critical nutrient input levels. The possibility of emerging cascading tipping dynamics calls for the development of a unified theory of interacting tipping elements and the quantitative analysis of interacting real-world tipping elements." acknowledgement: "V.K. thanks the German National Academic Foundation (Studienstiftung des deutschen Volkes) for financial\r\nsupport. J.F.D. is grateful for financial support by the Stordalen Foundation via the Planetary Boundary Research\r\nNetwork (PB.net), the Earth League’s EarthDoc program and the European Research Council Advanced Grant\r\nproject ERA (Earth Resilience in the Anthropocene). We are thankful for support by the Leibniz Association\r\n(project DominoES).\r\nAcknowledgements. This work has been performed in the context of the copan collaboration and the FutureLab on Earth\r\nResilience in the Anthropocene at the Potsdam Institute for Climate Impact Research. Furthermore, we acknowledge\r\ndiscussions with and helpful comments by N. Wunderling, J. Heitzig and M. Wiedermann." article_number: '200599' article_processing_charge: No article_type: original author: - first_name: Ann Kristin full_name: Klose, Ann Kristin last_name: Klose - first_name: Volker full_name: Karle, Volker id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425 last_name: Karle orcid: 0000-0002-6963-0129 - first_name: Ricarda full_name: Winkelmann, Ricarda last_name: Winkelmann - first_name: Jonathan F. full_name: Donges, Jonathan F. last_name: Donges citation: ama: 'Klose AK, Karle V, Winkelmann R, Donges JF. Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements. Royal Society Open Science. 2020;7(6). doi:10.1098/rsos.200599' apa: 'Klose, A. K., Karle, V., Winkelmann, R., & Donges, J. F. (2020). Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements. Royal Society Open Science. The Royal Society. https://doi.org/10.1098/rsos.200599' chicago: 'Klose, Ann Kristin, Volker Karle, Ricarda Winkelmann, and Jonathan F. Donges. “Emergence of Cascading Dynamics in Interacting Tipping Elements of Ecology and Climate: Cascading Dynamics in Tipping Elements.” Royal Society Open Science. The Royal Society, 2020. https://doi.org/10.1098/rsos.200599.' ieee: 'A. K. Klose, V. Karle, R. Winkelmann, and J. F. Donges, “Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements,” Royal Society Open Science, vol. 7, no. 6. The Royal Society, 2020.' ista: 'Klose AK, Karle V, Winkelmann R, Donges JF. 2020. Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements. Royal Society Open Science. 7(6), 200599.' mla: 'Klose, Ann Kristin, et al. “Emergence of Cascading Dynamics in Interacting Tipping Elements of Ecology and Climate: Cascading Dynamics in Tipping Elements.” Royal Society Open Science, vol. 7, no. 6, 200599, The Royal Society, 2020, doi:10.1098/rsos.200599.' short: A.K. Klose, V. Karle, R. Winkelmann, J.F. Donges, Royal Society Open Science 7 (2020). date_created: 2020-11-08T23:01:25Z date_published: 2020-06-01T00:00:00Z date_updated: 2024-03-12T12:31:30Z day: '01' ddc: - '530' - '550' department: - _id: MiLe doi: 10.1098/rsos.200599 external_id: arxiv: - '1910.12042' isi: - '000545625200001' file: - access_level: open_access checksum: 5505c445de373bfd836eb4d3b48b1f37 content_type: application/pdf creator: dernst date_created: 2020-11-09T09:07:11Z date_updated: 2020-11-09T09:07:11Z file_id: '8748' file_name: 2020_RoyalSocOpenScience_Klose.pdf file_size: 1611485 relation: main_file success: 1 file_date_updated: 2020-11-09T09:07:11Z has_accepted_license: '1' intvolume: ' 7' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version publication: Royal Society Open Science publication_identifier: eissn: - '20545703' publication_status: published publisher: The Royal Society quality_controlled: '1' scopus_import: '1' status: public title: 'Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2020' ... --- _id: '6940' abstract: - lang: eng text: "We study the effect of a linear tunneling coupling between two-dimensional systems, each separately\r\nexhibiting the topological Berezinskii-Kosterlitz-Thouless (BKT) transition. In the uncoupled limit, there\r\nare two phases: one where the one-body correlation functions are algebraically decaying and the other with\r\nexponential decay. When the linear coupling is turned on, a third BKT-paired phase emerges, in which one-body correlations are exponentially decaying, while two-body correlation functions exhibit power-law\r\ndecay. We perform numerical simulations in the paradigmatic case of two coupled XY models at finite\r\ntemperature, finding evidences that for any finite value of the interlayer coupling, the BKT-paired phase is\r\npresent. We provide a picture of the phase diagram using a renormalization group approach." acknowledgement: "We thank S. Chiacchiera, G. Delfino, N. Dupuis, T. Enss, M. Fabrizio and G. Gori for many stimulating discussions.\r\nG.B. acknowledges support from the Austrian Science Fund (FWF), under project No. M2461-N27. N.D. acknowledges\r\nsupport from Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy EXC-2181/1 - 390900948 (the Heidelberg STRUCTURES Excellence Cluster) and from the DFG Collaborative Research Centre “SFB 1225 ISOQUANT”. Support from the CNR/MTA Italy-Hungary 2019-2021 Joint Project “Strongly interacting systems in confined geometries” is gratefully acknowledged." article_number: '100601' article_processing_charge: No article_type: original author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Nicolò full_name: Defenu, Nicolò last_name: Defenu - first_name: István full_name: Nándori, István last_name: Nándori - first_name: Luca full_name: Salasnich, Luca last_name: Salasnich - first_name: Andrea full_name: Trombettoni, Andrea last_name: Trombettoni citation: ama: Bighin G, Defenu N, Nándori I, Salasnich L, Trombettoni A. Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models. Physical Review Letters. 2019;123(10). doi:10.1103/physrevlett.123.100601 apa: Bighin, G., Defenu, N., Nándori, I., Salasnich, L., & Trombettoni, A. (2019). Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.123.100601 chicago: Bighin, Giacomo, Nicolò Defenu, István Nándori, Luca Salasnich, and Andrea Trombettoni. “Berezinskii-Kosterlitz-Thouless Paired Phase in Coupled XY Models.” Physical Review Letters. American Physical Society, 2019. https://doi.org/10.1103/physrevlett.123.100601. ieee: G. Bighin, N. Defenu, I. Nándori, L. Salasnich, and A. Trombettoni, “Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models,” Physical Review Letters, vol. 123, no. 10. American Physical Society, 2019. ista: Bighin G, Defenu N, Nándori I, Salasnich L, Trombettoni A. 2019. Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models. Physical Review Letters. 123(10), 100601. mla: Bighin, Giacomo, et al. “Berezinskii-Kosterlitz-Thouless Paired Phase in Coupled XY Models.” Physical Review Letters, vol. 123, no. 10, 100601, American Physical Society, 2019, doi:10.1103/physrevlett.123.100601. short: G. Bighin, N. Defenu, I. Nándori, L. Salasnich, A. Trombettoni, Physical Review Letters 123 (2019). date_created: 2019-10-14T06:31:13Z date_published: 2019-09-06T00:00:00Z date_updated: 2023-08-30T06:57:53Z day: '06' department: - _id: MiLe doi: 10.1103/physrevlett.123.100601 external_id: arxiv: - '1907.06253' isi: - '000483587200004' intvolume: ' 123' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1907.06253 month: '09' oa: 1 oa_version: Preprint project: - _id: 26986C82-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: M02641 name: A path-integral approach to composite impurities publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News auf IST Website relation: press_release url: https://ist.ac.at/en/news/new-form-of-magnetism-found/ scopus_import: '1' status: public title: Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 123 year: '2019' ... --- _id: '6955' abstract: - lang: eng text: We study few-body bound states of charged particles subject to attractive zero-range/short-range plus repulsive Coulomb interparticle forces. The characteristic length scales of the system at zero energy are set by the Coulomb length scale D and the Coulomb-modified effective range r eff. We study shallow bound states of charged particles with D >> r eff and show that these systems obey universal scaling laws different from neutral particles. An accurate description of these states requires both the Coulomb-modified scattering length and the effective range unless the Coulomb interaction is very weak (D -> ). Our findings are relevant for bound states whose spatial extent is significantly larger than the range of the attractive potential. These states enjoy universality – their character is independent of the shape of the short-range potential. article_number: '135016' article_processing_charge: No article_type: original author: - first_name: C.H. full_name: Schmickler, C.H. last_name: Schmickler - first_name: H.-W. full_name: Hammer, H.-W. last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Schmickler CH, Hammer H-W, Volosniev A. Universal physics of bound states of a few charged particles. Physics Letters B. 2019;798. doi:10.1016/j.physletb.2019.135016 apa: Schmickler, C. H., Hammer, H.-W., & Volosniev, A. (2019). Universal physics of bound states of a few charged particles. Physics Letters B. Elsevier. https://doi.org/10.1016/j.physletb.2019.135016 chicago: Schmickler, C.H., H.-W. Hammer, and Artem Volosniev. “Universal Physics of Bound States of a Few Charged Particles.” Physics Letters B. Elsevier, 2019. https://doi.org/10.1016/j.physletb.2019.135016. ieee: C. H. Schmickler, H.-W. Hammer, and A. Volosniev, “Universal physics of bound states of a few charged particles,” Physics Letters B, vol. 798. Elsevier, 2019. ista: Schmickler CH, Hammer H-W, Volosniev A. 2019. Universal physics of bound states of a few charged particles. Physics Letters B. 798, 135016. mla: Schmickler, C. H., et al. “Universal Physics of Bound States of a Few Charged Particles.” Physics Letters B, vol. 798, 135016, Elsevier, 2019, doi:10.1016/j.physletb.2019.135016. short: C.H. Schmickler, H.-W. Hammer, A. Volosniev, Physics Letters B 798 (2019). date_created: 2019-10-18T18:33:32Z date_published: 2019-11-10T00:00:00Z date_updated: 2023-08-30T07:06:42Z day: '10' ddc: - '530' department: - _id: MiLe doi: 10.1016/j.physletb.2019.135016 external_id: arxiv: - '1904.00913' isi: - '000494939000086' file: - access_level: open_access checksum: d27f983b34ea7dafdf356afbf9472fbf content_type: application/pdf creator: dernst date_created: 2019-10-25T12:47:04Z date_updated: 2020-07-14T12:47:46Z file_id: '6974' file_name: 2019_PhysicsLettersB_Schmickler.pdf file_size: 528362 relation: main_file file_date_updated: 2020-07-14T12:47:46Z has_accepted_license: '1' intvolume: ' 798' isi: 1 language: - iso: eng month: '11' oa: 1 oa_version: Published Version publication: Physics Letters B publication_identifier: issn: - 0370-2693 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Universal physics of bound states of a few charged particles tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 798 year: '2019' ... --- _id: '5886' abstract: - lang: eng text: Problems involving quantum impurities, in which one or a few particles are interacting with a macroscopic environment, represent a pervasive paradigm, spanning across atomic, molecular, and condensed-matter physics. In this paper we introduce new variational approaches to quantum impurities and apply them to the Fröhlich polaron–a quasiparticle formed out of an electron (or other point-like impurity) in a polar medium, and to the angulon–a quasiparticle formed out of a rotating molecule in a bosonic bath. We benchmark these approaches against established theories, evaluating their accuracy as a function of the impurity-bath coupling. article_processing_charge: No author: - first_name: Xiang full_name: Li, Xiang id: 4B7E523C-F248-11E8-B48F-1D18A9856A87 last_name: Li - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: 'Li X, Bighin G, Yakaboylu E, Lemeshko M. Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics. 2019. doi:10.1080/00268976.2019.1567852' apa: 'Li, X., Bighin, G., Yakaboylu, E., & Lemeshko, M. (2019). Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics. Taylor and Francis. https://doi.org/10.1080/00268976.2019.1567852' chicago: 'Li, Xiang, Giacomo Bighin, Enderalp Yakaboylu, and Mikhail Lemeshko. “Variational Approaches to Quantum Impurities: From the Fröhlich Polaron to the Angulon.” Molecular Physics. Taylor and Francis, 2019. https://doi.org/10.1080/00268976.2019.1567852.' ieee: 'X. Li, G. Bighin, E. Yakaboylu, and M. Lemeshko, “Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon,” Molecular Physics. Taylor and Francis, 2019.' ista: 'Li X, Bighin G, Yakaboylu E, Lemeshko M. 2019. Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics.' mla: 'Li, Xiang, et al. “Variational Approaches to Quantum Impurities: From the Fröhlich Polaron to the Angulon.” Molecular Physics, Taylor and Francis, 2019, doi:10.1080/00268976.2019.1567852.' short: X. Li, G. Bighin, E. Yakaboylu, M. Lemeshko, Molecular Physics (2019). date_created: 2019-01-27T22:59:10Z date_published: 2019-01-18T00:00:00Z date_updated: 2023-09-07T13:16:42Z day: '18' ddc: - '530' department: - _id: MiLe doi: 10.1080/00268976.2019.1567852 ec_funded: 1 external_id: isi: - '000474641400008' file: - access_level: open_access checksum: 178964744b636a6f036372f4f090a657 content_type: application/pdf creator: dernst date_created: 2019-01-29T08:32:57Z date_updated: 2020-07-14T12:47:13Z file_id: '5896' file_name: 2019_MolecularPhysics_Li.pdf file_size: 1309966 relation: main_file file_date_updated: 2020-07-14T12:47:13Z has_accepted_license: '1' isi: 1 language: - iso: eng month: '01' oa: 1 oa_version: Published Version project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Molecular Physics publication_identifier: issn: - '00268976' publication_status: published publisher: Taylor and Francis quality_controlled: '1' related_material: record: - id: '8958' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 year: '2019' ... --- _id: '6646' abstract: - lang: eng text: We demonstrate robust retention of valley coherence and its control via polariton pseudospin precession through the optical TE-TM splitting in bilayer WS2 microcavity exciton polaritons at room temperature. article_number: paper JTu2A.52 article_processing_charge: No author: - first_name: Mandeep full_name: Khatoniar, Mandeep last_name: Khatoniar - first_name: Nicholas full_name: Yama, Nicholas last_name: Yama - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Sriram full_name: Guddala, Sriram last_name: Guddala - first_name: Pouyan full_name: Ghaemi, Pouyan last_name: Ghaemi - first_name: Vinod full_name: Menon, Vinod last_name: Menon citation: ama: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. Room temperature control of valley coherence in bilayer WS2 exciton polaritons. In: CLEO: Applications and Technology. Optica  Publishing Group; 2019. doi:10.1364/cleo_at.2019.jtu2a.52' apa: 'Khatoniar, M., Yama, N., Ghazaryan, A., Guddala, S., Ghaemi, P., & Menon, V. (2019). Room temperature control of valley coherence in bilayer WS2 exciton polaritons. In CLEO: Applications and Technology. San Jose, CA, United States: Optica  Publishing Group. https://doi.org/10.1364/cleo_at.2019.jtu2a.52' chicago: 'Khatoniar, Mandeep, Nicholas Yama, Areg Ghazaryan, Sriram Guddala, Pouyan Ghaemi, and Vinod Menon. “Room Temperature Control of Valley Coherence in Bilayer WS2 Exciton Polaritons.” In CLEO: Applications and Technology. Optica  Publishing Group, 2019. https://doi.org/10.1364/cleo_at.2019.jtu2a.52.' ieee: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, and V. Menon, “Room temperature control of valley coherence in bilayer WS2 exciton polaritons,” in CLEO: Applications and Technology, San Jose, CA, United States, 2019.' ista: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. 2019. Room temperature control of valley coherence in bilayer WS2 exciton polaritons. CLEO: Applications and Technology. CLEO: Conference on Lasers and Electro-Optics, paper JTu2A.52.' mla: 'Khatoniar, Mandeep, et al. “Room Temperature Control of Valley Coherence in Bilayer WS2 Exciton Polaritons.” CLEO: Applications and Technology, paper JTu2A.52, Optica  Publishing Group, 2019, doi:10.1364/cleo_at.2019.jtu2a.52.' short: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, V. Menon, in:, CLEO: Applications and Technology, Optica  Publishing Group, 2019.' conference: end_date: 2019-05-10 location: San Jose, CA, United States name: 'CLEO: Conference on Lasers and Electro-Optics' start_date: 2019-05-05 date_created: 2019-07-17T09:40:44Z date_published: 2019-05-01T00:00:00Z date_updated: 2023-10-17T12:14:29Z day: '01' department: - _id: MiLe doi: 10.1364/cleo_at.2019.jtu2a.52 language: - iso: eng month: '05' oa_version: None publication: 'CLEO: Applications and Technology' publication_identifier: isbn: - '9781943580576' publication_status: published publisher: Optica Publishing Group quality_controlled: '1' scopus_import: '1' status: public title: Room temperature control of valley coherence in bilayer WS2 exciton polaritons type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- _id: '7190' abstract: - lang: eng text: We investigate the ground-state energy of a one-dimensional Fermi gas with two bosonic impurities. We consider spinless fermions with no fermion-fermion interactions. The fermion-impurity and impurity-impurity interactions are modeled with Dirac delta functions. First, we study the case where impurity and fermion have equal masses, and the impurity-impurity two-body interaction is identical to the fermion-impurity interaction, such that the system is solvable with the Bethe ansatz. For attractive interactions, we find that the energy of the impurity-impurity subsystem is below the energy of the bound state that exists without the Fermi gas. We interpret this as a manifestation of attractive boson-boson interactions induced by the fermionic medium, and refer to the impurity-impurity subsystem as an in-medium bound state. For repulsive interactions, we find no in-medium bound states. Second, we construct an effective model to describe these interactions, and compare its predictions to the exact solution. We use this effective model to study nonintegrable systems with unequal masses and/or potentials. We discuss parameter regimes for which impurity-impurity attraction induced by the Fermi gas can lead to the formation of in-medium bound states made of bosons that repel each other in the absence of the Fermi gas. article_number: '033177' article_processing_charge: No article_type: original author: - first_name: D. full_name: Huber, D. last_name: Huber - first_name: H.-W. full_name: Hammer, H.-W. last_name: Hammer - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 citation: ama: Huber D, Hammer H-W, Volosniev A. In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas. Physical Review Research. 2019;1(3). doi:10.1103/physrevresearch.1.033177 apa: Huber, D., Hammer, H.-W., & Volosniev, A. (2019). In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas. Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.1.033177 chicago: Huber, D., H.-W. Hammer, and Artem Volosniev. “In-Medium Bound States of Two Bosonic Impurities in a One-Dimensional Fermi Gas.” Physical Review Research. American Physical Society, 2019. https://doi.org/10.1103/physrevresearch.1.033177. ieee: D. Huber, H.-W. Hammer, and A. Volosniev, “In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas,” Physical Review Research, vol. 1, no. 3. American Physical Society, 2019. ista: Huber D, Hammer H-W, Volosniev A. 2019. In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas. Physical Review Research. 1(3), 033177. mla: Huber, D., et al. “In-Medium Bound States of Two Bosonic Impurities in a One-Dimensional Fermi Gas.” Physical Review Research, vol. 1, no. 3, 033177, American Physical Society, 2019, doi:10.1103/physrevresearch.1.033177. short: D. Huber, H.-W. Hammer, A. Volosniev, Physical Review Research 1 (2019). date_created: 2019-12-17T13:03:41Z date_published: 2019-12-16T00:00:00Z date_updated: 2024-02-28T13:11:40Z day: '16' ddc: - '530' department: - _id: MiLe doi: 10.1103/physrevresearch.1.033177 ec_funded: 1 external_id: arxiv: - '1908.02483' file: - access_level: open_access checksum: 382eb67e62a77052a23887332d363f96 content_type: application/pdf creator: dernst date_created: 2019-12-18T07:13:14Z date_updated: 2020-07-14T12:47:52Z file_id: '7193' file_name: 2019_PhysRevResearch_Huber.pdf file_size: 1370022 relation: main_file file_date_updated: 2020-07-14T12:47:52Z has_accepted_license: '1' intvolume: ' 1' issue: '3' language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 1 year: '2019' ... --- _id: '6092' abstract: - lang: eng text: In 1915, Einstein and de Haas and Barnett demonstrated that changing the magnetization of a magnetic material results in mechanical rotation and vice versa. At the microscopic level, this effect governs the transfer between electron spin and orbital angular momentum, and lattice degrees of freedom, understanding which is key for molecular magnets, nano-magneto-mechanics, spintronics, and ultrafast magnetism. Until now, the timescales of electron-to-lattice angular momentum transfer remain unclear, since modeling this process on a microscopic level requires the addition of an infinite amount of quantum angular momenta. We show that this problem can be solved by reformulating it in terms of the recently discovered angulon quasiparticles, which results in a rotationally invariant quantum many-body theory. In particular, we demonstrate that nonperturbative effects take place even if the electron-phonon coupling is weak and give rise to angular momentum transfer on femtosecond timescales. article_number: '064428' article_processing_charge: No author: - first_name: Johann H full_name: Mentink, Johann H last_name: Mentink - first_name: Mikhail full_name: Katsnelson, Mikhail last_name: Katsnelson - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Mentink JH, Katsnelson M, Lemeshko M. Quantum many-body dynamics of the Einstein-de Haas effect. Physical Review B. 2019;99(6). doi:10.1103/PhysRevB.99.064428 apa: Mentink, J. H., Katsnelson, M., & Lemeshko, M. (2019). Quantum many-body dynamics of the Einstein-de Haas effect. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.99.064428 chicago: Mentink, Johann H, Mikhail Katsnelson, and Mikhail Lemeshko. “Quantum Many-Body Dynamics of the Einstein-de Haas Effect.” Physical Review B. American Physical Society, 2019. https://doi.org/10.1103/PhysRevB.99.064428. ieee: J. H. Mentink, M. Katsnelson, and M. Lemeshko, “Quantum many-body dynamics of the Einstein-de Haas effect,” Physical Review B, vol. 99, no. 6. American Physical Society, 2019. ista: Mentink JH, Katsnelson M, Lemeshko M. 2019. Quantum many-body dynamics of the Einstein-de Haas effect. Physical Review B. 99(6), 064428. mla: Mentink, Johann H., et al. “Quantum Many-Body Dynamics of the Einstein-de Haas Effect.” Physical Review B, vol. 99, no. 6, 064428, American Physical Society, 2019, doi:10.1103/PhysRevB.99.064428. short: J.H. Mentink, M. Katsnelson, M. Lemeshko, Physical Review B 99 (2019). date_created: 2019-03-10T22:59:20Z date_published: 2019-02-01T00:00:00Z date_updated: 2024-02-28T13:11:54Z day: '01' department: - _id: MiLe doi: 10.1103/PhysRevB.99.064428 external_id: arxiv: - '1802.01638' isi: - '000459223400004' intvolume: ' 99' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1802.01638 month: '02' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review B publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Quantum many-body dynamics of the Einstein-de Haas effect type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 99 year: '2019' ... --- _id: '6786' abstract: - lang: eng text: Dipolar coupling plays a fundamental role in the interaction between electrically or magnetically polarized species such as magnetic atoms and dipolar molecules in a gas or dipolar excitons in the solid state. Unlike Coulomb or contactlike interactions found in many atomic, molecular, and condensed-matter systems, this interaction is long-ranged and highly anisotropic, as it changes from repulsive to attractive depending on the relative positions and orientation of the dipoles. Because of this unique property, many exotic, symmetry-breaking collective states have been recently predicted for cold dipolar gases, but only a few have been experimentally detected and only in dilute atomic dipolar Bose-Einstein condensates. Here, we report on the first observation of attractive dipolar coupling between excitonic dipoles using a new design of stacked semiconductor bilayers. We show that the presence of a dipolar exciton fluid in one bilayer modifies the spatial distribution and increases the binding energy of excitonic dipoles in a vertically remote layer. The binding energy changes are explained using a many-body polaron model describing the deformation of the exciton cloud due to its interaction with a remote dipolar exciton. The surprising nonmonotonic dependence on the cloud density indicates the important role of dipolar correlations, which is unique to dense, strongly interacting dipolar solid-state systems. Our concept provides a route for the realization of dipolar lattices with strong anisotropic interactions in semiconductor systems, which open the way for the observation of theoretically predicted new and exotic collective phases, as well as for engineering and sensing their collective excitations. article_number: '021026' article_processing_charge: No article_type: original author: - first_name: Colin full_name: Hubert, Colin last_name: Hubert - first_name: Yifat full_name: Baruchi, Yifat last_name: Baruchi - first_name: Yotam full_name: Mazuz-Harpaz, Yotam last_name: Mazuz-Harpaz - first_name: Kobi full_name: Cohen, Kobi last_name: Cohen - first_name: Klaus full_name: Biermann, Klaus last_name: Biermann - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Ken full_name: West, Ken last_name: West - first_name: Loren full_name: Pfeiffer, Loren last_name: Pfeiffer - first_name: Ronen full_name: Rapaport, Ronen last_name: Rapaport - first_name: Paulo full_name: Santos, Paulo last_name: Santos citation: ama: Hubert C, Baruchi Y, Mazuz-Harpaz Y, et al. Attractive dipolar coupling between stacked exciton fluids. Physical Review X. 2019;9(2). doi:10.1103/PhysRevX.9.021026 apa: Hubert, C., Baruchi, Y., Mazuz-Harpaz, Y., Cohen, K., Biermann, K., Lemeshko, M., … Santos, P. (2019). Attractive dipolar coupling between stacked exciton fluids. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.9.021026 chicago: Hubert, Colin, Yifat Baruchi, Yotam Mazuz-Harpaz, Kobi Cohen, Klaus Biermann, Mikhail Lemeshko, Ken West, Loren Pfeiffer, Ronen Rapaport, and Paulo Santos. “Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review X. American Physical Society, 2019. https://doi.org/10.1103/PhysRevX.9.021026. ieee: C. Hubert et al., “Attractive dipolar coupling between stacked exciton fluids,” Physical Review X, vol. 9, no. 2. American Physical Society, 2019. ista: Hubert C, Baruchi Y, Mazuz-Harpaz Y, Cohen K, Biermann K, Lemeshko M, West K, Pfeiffer L, Rapaport R, Santos P. 2019. Attractive dipolar coupling between stacked exciton fluids. Physical Review X. 9(2), 021026. mla: Hubert, Colin, et al. “Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review X, vol. 9, no. 2, 021026, American Physical Society, 2019, doi:10.1103/PhysRevX.9.021026. short: C. Hubert, Y. Baruchi, Y. Mazuz-Harpaz, K. Cohen, K. Biermann, M. Lemeshko, K. West, L. Pfeiffer, R. Rapaport, P. Santos, Physical Review X 9 (2019). date_created: 2019-08-11T21:59:20Z date_published: 2019-05-08T00:00:00Z date_updated: 2024-02-28T13:12:48Z day: '08' ddc: - '530' department: - _id: MiLe doi: 10.1103/PhysRevX.9.021026 external_id: arxiv: - '1807.11238' isi: - '000467402900001' file: - access_level: open_access checksum: 065ff82ee4a1d2c3773ce4b76ff4213c content_type: application/pdf creator: dernst date_created: 2019-08-12T12:14:18Z date_updated: 2020-07-14T12:47:40Z file_id: '6802' file_name: 2019_PhysReviewX_Hubert.pdf file_size: 1193550 relation: main_file file_date_updated: 2020-07-14T12:47:40Z has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '2' language: - iso: eng month: '05' oa: 1 oa_version: Published Version project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review X publication_identifier: eissn: - 2160-3308 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Attractive dipolar coupling between stacked exciton fluids tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 9 year: '2019' ... --- _id: '6632' abstract: - lang: eng text: We consider a two-component Bose gas in two dimensions at a low temperature with short-range repulsive interaction. In the coexistence phase where both components are superfluid, interspecies interactions induce a nondissipative drag between the two superfluid flows (Andreev-Bashkin effect). We show that this behavior leads to a modification of the usual Berezinskii-Kosterlitz-Thouless (BKT) transition in two dimensions. We extend the renormalization of the superfluid densities at finite temperature using the renormalization-group approach and find that the vortices of one component have a large influence on the superfluid properties of the other, mediated by the nondissipative drag. The extended BKT flow equations indicate that the occurrence of the vortex unbinding transition in one of the components can induce the breakdown of superfluidity also in the other, leading to a locking phenomenon for the critical temperatures of the two gases. article_number: '063627' article_processing_charge: No author: - first_name: Volker full_name: Karle, Volker last_name: Karle - first_name: Nicolò full_name: Defenu, Nicolò last_name: Defenu - first_name: Tilman full_name: Enss, Tilman last_name: Enss citation: ama: Karle V, Defenu N, Enss T. Coupled superfluidity of binary Bose mixtures in two dimensions. Physical Review A. 2019;99(6). doi:10.1103/PhysRevA.99.063627 apa: Karle, V., Defenu, N., & Enss, T. (2019). Coupled superfluidity of binary Bose mixtures in two dimensions. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.99.063627 chicago: Karle, Volker, Nicolò Defenu, and Tilman Enss. “Coupled Superfluidity of Binary Bose Mixtures in Two Dimensions.” Physical Review A. American Physical Society, 2019. https://doi.org/10.1103/PhysRevA.99.063627. ieee: V. Karle, N. Defenu, and T. Enss, “Coupled superfluidity of binary Bose mixtures in two dimensions,” Physical Review A, vol. 99, no. 6. American Physical Society, 2019. ista: Karle V, Defenu N, Enss T. 2019. Coupled superfluidity of binary Bose mixtures in two dimensions. Physical Review A. 99(6), 063627. mla: Karle, Volker, et al. “Coupled Superfluidity of Binary Bose Mixtures in Two Dimensions.” Physical Review A, vol. 99, no. 6, 063627, American Physical Society, 2019, doi:10.1103/PhysRevA.99.063627. short: V. Karle, N. Defenu, T. Enss, Physical Review A 99 (2019). date_created: 2019-07-14T21:59:17Z date_published: 2019-06-28T00:00:00Z date_updated: 2024-02-28T13:12:34Z day: '28' department: - _id: MiLe doi: 10.1103/PhysRevA.99.063627 external_id: arxiv: - '1903.06759' isi: - '000473133600007' intvolume: ' 99' isi: 1 issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1903.06759 month: '06' oa: 1 oa_version: Preprint publication: Physical Review A publication_identifier: eissn: - '24699934' issn: - '24699926' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Coupled superfluidity of binary Bose mixtures in two dimensions type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 99 year: '2019' ... --- _id: '7396' abstract: - lang: eng text: The angular momentum of molecules, or, equivalently, their rotation in three-dimensional space, is ideally suited for quantum control. Molecular angular momentum is naturally quantized, time evolution is governed by a well-known Hamiltonian with only a few accurately known parameters, and transitions between rotational levels can be driven by external fields from various parts of the electromagnetic spectrum. Control over the rotational motion can be exerted in one-, two-, and many-body scenarios, thereby allowing one to probe Anderson localization, target stereoselectivity of bimolecular reactions, or encode quantum information to name just a few examples. The corresponding approaches to quantum control are pursued within separate, and typically disjoint, subfields of physics, including ultrafast science, cold collisions, ultracold gases, quantum information science, and condensed-matter physics. It is the purpose of this review to present the various control phenomena, which all rely on the same underlying physics, within a unified framework. To this end, recall the Hamiltonian for free rotations, assuming the rigid rotor approximation to be valid, and summarize the different ways for a rotor to interact with external electromagnetic fields. These interactions can be exploited for control—from achieving alignment, orientation, or laser cooling in a one-body framework, steering bimolecular collisions, or realizing a quantum computer or quantum simulator in the many-body setting. article_number: '035005 ' article_processing_charge: No article_type: original author: - first_name: Christiane P. full_name: Koch, Christiane P. last_name: Koch - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Dominique full_name: Sugny, Dominique last_name: Sugny citation: ama: Koch CP, Lemeshko M, Sugny D. Quantum control of molecular rotation. Reviews of Modern Physics. 2019;91(3). doi:10.1103/revmodphys.91.035005 apa: Koch, C. P., Lemeshko, M., & Sugny, D. (2019). Quantum control of molecular rotation. Reviews of Modern Physics. American Physical Society. https://doi.org/10.1103/revmodphys.91.035005 chicago: Koch, Christiane P., Mikhail Lemeshko, and Dominique Sugny. “Quantum Control of Molecular Rotation.” Reviews of Modern Physics. American Physical Society, 2019. https://doi.org/10.1103/revmodphys.91.035005. ieee: C. P. Koch, M. Lemeshko, and D. Sugny, “Quantum control of molecular rotation,” Reviews of Modern Physics, vol. 91, no. 3. American Physical Society, 2019. ista: Koch CP, Lemeshko M, Sugny D. 2019. Quantum control of molecular rotation. Reviews of Modern Physics. 91(3), 035005. mla: Koch, Christiane P., et al. “Quantum Control of Molecular Rotation.” Reviews of Modern Physics, vol. 91, no. 3, 035005, American Physical Society, 2019, doi:10.1103/revmodphys.91.035005. short: C.P. Koch, M. Lemeshko, D. Sugny, Reviews of Modern Physics 91 (2019). date_created: 2020-01-29T16:04:19Z date_published: 2019-09-18T00:00:00Z date_updated: 2024-02-28T13:15:33Z day: '18' department: - _id: MiLe doi: 10.1103/revmodphys.91.035005 external_id: arxiv: - '1810.11338' isi: - '000486661700001' intvolume: ' 91' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1810.11338 month: '09' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Reviews of Modern Physics publication_identifier: eissn: - 1539-0756 issn: - 0034-6861 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Quantum control of molecular rotation type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 91 year: '2019' ... --- _id: '195' abstract: - lang: eng text: We demonstrate that identical impurities immersed in a two-dimensional many-particle bath can be viewed as flux-tube-charged-particle composites described by fractional statistics. In particular, we find that the bath manifests itself as an external magnetic flux tube with respect to the impurities, and hence the time-reversal symmetry is broken for the effective Hamiltonian describing the impurities. The emerging flux tube acts as a statistical gauge field after a certain critical coupling. This critical coupling corresponds to the intersection point between the quasiparticle state and the phonon wing, where the angular momentum is transferred from the impurity to the bath. This amounts to a novel configuration with emerging anyons. The proposed setup paves the way to realizing anyons using electrons interacting with superfluid helium or lattice phonons, as well as using atomic impurities in ultracold gases. article_number: '045402' article_processing_charge: No author: - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Yakaboylu E, Lemeshko M. Anyonic statistics of quantum impurities in two dimensions. Physical Review B - Condensed Matter and Materials Physics. 2018;98(4). doi:10.1103/PhysRevB.98.045402 apa: Yakaboylu, E., & Lemeshko, M. (2018). Anyonic statistics of quantum impurities in two dimensions. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.98.045402 chicago: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum Impurities in Two Dimensions.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.98.045402. ieee: E. Yakaboylu and M. Lemeshko, “Anyonic statistics of quantum impurities in two dimensions,” Physical Review B - Condensed Matter and Materials Physics, vol. 98, no. 4. American Physical Society, 2018. ista: Yakaboylu E, Lemeshko M. 2018. Anyonic statistics of quantum impurities in two dimensions. Physical Review B - Condensed Matter and Materials Physics. 98(4), 045402. mla: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum Impurities in Two Dimensions.” Physical Review B - Condensed Matter and Materials Physics, vol. 98, no. 4, 045402, American Physical Society, 2018, doi:10.1103/PhysRevB.98.045402. short: E. Yakaboylu, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 98 (2018). date_created: 2018-12-11T11:45:08Z date_published: 2018-07-15T00:00:00Z date_updated: 2023-09-08T13:22:57Z day: '15' department: - _id: MiLe doi: 10.1103/PhysRevB.98.045402 ec_funded: 1 external_id: arxiv: - '1712.00308' isi: - '000436939100007' intvolume: ' 98' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1712.00308 month: '07' oa: 1 oa_version: Submitted Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review B - Condensed Matter and Materials Physics publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Anyonic statistics of quantum impurities in two dimensions type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 98 year: '2018' ... --- _id: '427' abstract: - lang: eng text: We investigate the quantum interference induced shifts between energetically close states in highly charged ions, with the energy structure being observed by laser spectroscopy. In this work, we focus on hyperfine states of lithiumlike heavy-Z isotopes and quantify how much quantum interference changes the observed transition frequencies. The process of photon excitation and subsequent photon decay for the transition 2s→2p→2s is implemented with fully relativistic and full-multipole frameworks, which are relevant for such relativistic atomic systems. We consider the isotopes Pb79+207 and Bi80+209 due to experimental interest, as well as other examples of isotopes with lower Z, namely Pr56+141 and Ho64+165. We conclude that quantum interference can induce shifts up to 11% of the linewidth in the measurable resonances of the considered isotopes, if interference between resonances is neglected. The inclusion of relativity decreases the cross section by 35%, mainly due to the complete retardation form of the electric dipole multipole. However, the contribution of the next higher multipoles (e.g., magnetic quadrupole) to the cross section is negligible. This makes the contribution of relativity and higher-order multipoles to the quantum interference induced shifts a minor effect, even for heavy-Z elements. acknowledgement: "This work was funded by the Portuguese Fundação para a Ciência e a Tecnologia (FCT/MCTES/PIDDAC) under Grant No. UID/FIS/04559/2013 (LIBPhys). P.A. acknowledges the support of the FCT, under Contract No. SFRH/BPD/92329/2013. L.S. acknowledges financial support from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant Agreement No. (291734). Laboratoire Kastler Brossel (LKB) is “Unité Mixte de Recherche de Sorbonne Université, de ENS-PSL Research University, du Collège de France et du CNRS No. 8552.” APPENDIX:\r\n" article_number: '022510' article_processing_charge: No article_type: original author: - first_name: Pedro full_name: Amaro, Pedro last_name: Amaro - first_name: Ulisses full_name: Loureiro, Ulisses last_name: Loureiro - first_name: Laleh full_name: Safari, Laleh id: 3C325E5E-F248-11E8-B48F-1D18A9856A87 last_name: Safari - first_name: Filippo full_name: Fratini, Filippo last_name: Fratini - first_name: Paul full_name: Indelicato, Paul last_name: Indelicato - first_name: Thomas full_name: Stöhlker, Thomas last_name: Stöhlker - first_name: José full_name: Santos, José last_name: Santos citation: ama: Amaro P, Loureiro U, Safari L, et al. Quantum interference in laser spectroscopy of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical Physics. 2018;97(2). doi:10.1103/PhysRevA.97.022510 apa: Amaro, P., Loureiro, U., Safari, L., Fratini, F., Indelicato, P., Stöhlker, T., & Santos, J. (2018). Quantum interference in laser spectroscopy of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.022510 chicago: Amaro, Pedro, Ulisses Loureiro, Laleh Safari, Filippo Fratini, Paul Indelicato, Thomas Stöhlker, and José Santos. “Quantum Interference in Laser Spectroscopy of Highly Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.022510. ieee: P. Amaro et al., “Quantum interference in laser spectroscopy of highly charged lithiumlike ions,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no. 2. American Physical Society, 2018. ista: Amaro P, Loureiro U, Safari L, Fratini F, Indelicato P, Stöhlker T, Santos J. 2018. Quantum interference in laser spectroscopy of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical Physics. 97(2), 022510. mla: Amaro, Pedro, et al. “Quantum Interference in Laser Spectroscopy of Highly Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no. 2, 022510, American Physical Society, 2018, doi:10.1103/PhysRevA.97.022510. short: P. Amaro, U. Loureiro, L. Safari, F. Fratini, P. Indelicato, T. Stöhlker, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018). date_created: 2018-12-11T11:46:25Z date_published: 2018-02-21T00:00:00Z date_updated: 2023-09-15T12:09:35Z day: '21' department: - _id: MiLe doi: 10.1103/PhysRevA.97.022510 ec_funded: 1 external_id: arxiv: - '1802.07920' isi: - '000425601000004' intvolume: ' 97' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1802.07920 month: '02' oa: 1 oa_version: Preprint project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: ' Physical Review A - Atomic, Molecular, and Optical Physics' publication_status: published publisher: American Physical Society publist_id: '7396' quality_controlled: '1' scopus_import: '1' status: public title: Quantum interference in laser spectroscopy of highly charged lithiumlike ions type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 97 year: '2018' ... --- _id: '5794' abstract: - lang: eng text: We present an approach to interacting quantum many-body systems based on the notion of quantum groups, also known as q-deformed Lie algebras. In particular, we show that, if the symmetry of a free quantum particle corresponds to a Lie group G, in the presence of a many-body environment this particle can be described by a deformed group, Gq. Crucially, the single deformation parameter, q, contains all the information about the many-particle interactions in the system. We exemplify our approach by considering a quantum rotor interacting with a bath of bosons, and demonstrate that extracting the value of q from closed-form solutions in the perturbative regime allows one to predict the behavior of the system for arbitrary values of the impurity-bath coupling strength, in good agreement with nonperturbative calculations. Furthermore, the value of the deformation parameter allows one to predict at which coupling strengths rotor-bath interactions result in a formation of a stable quasiparticle. The approach based on quantum groups does not only allow for a drastic simplification of impurity problems, but also provides valuable insights into hidden symmetries of interacting many-particle systems. article_number: '255302' article_processing_charge: No article_type: original author: - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Mikhail full_name: Shkolnikov, Mikhail id: 35084A62-F248-11E8-B48F-1D18A9856A87 last_name: Shkolnikov orcid: 0000-0002-4310-178X - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Yakaboylu E, Shkolnikov M, Lemeshko M. Quantum groups as hidden symmetries of quantum impurities. Physical Review Letters. 2018;121(25). doi:10.1103/PhysRevLett.121.255302 apa: Yakaboylu, E., Shkolnikov, M., & Lemeshko, M. (2018). Quantum groups as hidden symmetries of quantum impurities. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.121.255302 chicago: Yakaboylu, Enderalp, Mikhail Shkolnikov, and Mikhail Lemeshko. “Quantum Groups as Hidden Symmetries of Quantum Impurities.” Physical Review Letters. American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.255302. ieee: E. Yakaboylu, M. Shkolnikov, and M. Lemeshko, “Quantum groups as hidden symmetries of quantum impurities,” Physical Review Letters, vol. 121, no. 25. American Physical Society, 2018. ista: Yakaboylu E, Shkolnikov M, Lemeshko M. 2018. Quantum groups as hidden symmetries of quantum impurities. Physical Review Letters. 121(25), 255302. mla: Yakaboylu, Enderalp, et al. “Quantum Groups as Hidden Symmetries of Quantum Impurities.” Physical Review Letters, vol. 121, no. 25, 255302, American Physical Society, 2018, doi:10.1103/PhysRevLett.121.255302. short: E. Yakaboylu, M. Shkolnikov, M. Lemeshko, Physical Review Letters 121 (2018). date_created: 2019-01-06T22:59:12Z date_published: 2018-12-17T00:00:00Z date_updated: 2023-09-15T12:09:06Z day: '17' department: - _id: MiLe doi: 10.1103/PhysRevLett.121.255302 ec_funded: 1 external_id: arxiv: - '1809.00222' isi: - '000454178600009' intvolume: ' 121' isi: 1 issue: '25' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1809.00222 month: '12' oa: 1 oa_version: Preprint project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review Letters publication_identifier: issn: - '00319007' publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Quantum groups as hidden symmetries of quantum impurities type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 121 year: '2018' ... --- _id: '420' abstract: - lang: eng text: We analyze the theoretical derivation of the beyond-mean-field equation of state for two-dimensional gas of dilute, ultracold alkali-metal atoms in the Bardeen–Cooper–Schrieffer (BCS) to Bose–Einstein condensate (BEC) crossover. We show that at zero temperature our theory — considering Gaussian fluctuations on top of the mean-field equation of state — is in very good agreement with experimental data. Subsequently, we investigate the superfluid density at finite temperature and its renormalization due to the proliferation of vortex–antivortex pairs. By doing so, we determine the Berezinskii–Kosterlitz–Thouless (BKT) critical temperature — at which the renormalized superfluid density jumps to zero — as a function of the inter-atomic potential strength. We find that the Nelson–Kosterlitz criterion overestimates the BKT temperature with respect to the renormalization group equations, this effect being particularly relevant in the intermediate regime of the crossover. article_processing_charge: No author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Luca full_name: Salasnich, Luca last_name: Salasnich citation: ama: Bighin G, Salasnich L. Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics B. 2018;32(17):1840022. doi:10.1142/S0217979218400222 apa: Bighin, G., & Salasnich, L. (2018). Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics B. World Scientific Publishing. https://doi.org/10.1142/S0217979218400222 chicago: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid Density in the Two-Dimensional BCS-BEC Crossover.” International Journal of Modern Physics B. World Scientific Publishing, 2018. https://doi.org/10.1142/S0217979218400222. ieee: G. Bighin and L. Salasnich, “Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover,” International Journal of Modern Physics B, vol. 32, no. 17. World Scientific Publishing, p. 1840022, 2018. ista: Bighin G, Salasnich L. 2018. Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics B. 32(17), 1840022. mla: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid Density in the Two-Dimensional BCS-BEC Crossover.” International Journal of Modern Physics B, vol. 32, no. 17, World Scientific Publishing, 2018, p. 1840022, doi:10.1142/S0217979218400222. short: G. Bighin, L. Salasnich, International Journal of Modern Physics B 32 (2018) 1840022. date_created: 2018-12-11T11:46:22Z date_published: 2018-07-10T00:00:00Z date_updated: 2023-09-18T08:09:59Z day: '10' department: - _id: MiLe doi: 10.1142/S0217979218400222 external_id: isi: - '000438217300007' intvolume: ' 32' isi: 1 issue: '17' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1710.11171 month: '07' oa: 1 oa_version: Preprint page: '1840022' publication: International Journal of Modern Physics B publication_status: published publisher: World Scientific Publishing publist_id: '7402' quality_controlled: '1' scopus_import: '1' status: public title: Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 32 year: '2018' ... --- _id: '294' abstract: - lang: eng text: We developed a method to calculate two-photon processes in quantum mechanics that replaces the infinite summation over the intermediate states by a perturbation expansion. This latter consists of a series of commutators that involve position, momentum, and Hamiltonian quantum operators. We analyzed several single- and many-particle cases for which a closed-form solution to the perturbation expansion exists, as well as more complicated cases for which a solution is found by convergence. Throughout the article, Rayleigh and Raman scattering are taken as examples of two-photon processes. The present method provides a clear distinction between the Thomson scattering, regarded as classical scattering, and quantum contributions. Such a distinction lets us derive general results concerning light scattering. Finally, possible extensions to the developed formalism are discussed. article_processing_charge: No author: - first_name: Filippo full_name: Fratini, Filippo last_name: Fratini - first_name: Laleh full_name: Safari, Laleh id: 3C325E5E-F248-11E8-B48F-1D18A9856A87 last_name: Safari - first_name: Pedro full_name: Amaro, Pedro last_name: Amaro - first_name: José full_name: Santos, José last_name: Santos citation: ama: Fratini F, Safari L, Amaro P, Santos J. Two-photon processes based on quantum commutators. Physical Review A - Atomic, Molecular, and Optical Physics. 2018;97(4). doi:10.1103/PhysRevA.97.043842 apa: Fratini, F., Safari, L., Amaro, P., & Santos, J. (2018). Two-photon processes based on quantum commutators. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.043842 chicago: Fratini, Filippo, Laleh Safari, Pedro Amaro, and José Santos. “Two-Photon Processes Based on Quantum Commutators.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.043842. ieee: F. Fratini, L. Safari, P. Amaro, and J. Santos, “Two-photon processes based on quantum commutators,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no. 4. American Physical Society, 2018. ista: Fratini F, Safari L, Amaro P, Santos J. 2018. Two-photon processes based on quantum commutators. Physical Review A - Atomic, Molecular, and Optical Physics. 97(4). mla: Fratini, Filippo, et al. “Two-Photon Processes Based on Quantum Commutators.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 97, no. 4, American Physical Society, 2018, doi:10.1103/PhysRevA.97.043842. short: F. Fratini, L. Safari, P. Amaro, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018). date_created: 2018-12-11T11:45:40Z date_published: 2018-04-18T00:00:00Z date_updated: 2023-09-19T10:17:56Z day: '18' department: - _id: MiLe doi: 10.1103/PhysRevA.97.043842 ec_funded: 1 external_id: arxiv: - '1801.06892' isi: - '000430296800008' intvolume: ' 97' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1801.06892 month: '04' oa: 1 oa_version: Submitted Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Physical Review A - Atomic, Molecular, and Optical Physics publication_status: published publisher: American Physical Society publist_id: '7587' quality_controlled: '1' scopus_import: '1' status: public title: Two-photon processes based on quantum commutators type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 97 year: '2018' ... --- _id: '5983' abstract: - lang: eng text: We study a quantum impurity possessing both translational and internal rotational degrees of freedom interacting with a bosonic bath. Such a system corresponds to a “rotating polaron,” which can be used to model, e.g., a rotating molecule immersed in an ultracold Bose gas or superfluid helium. We derive the Hamiltonian of the rotating polaron and study its spectrum in the weak- and strong-coupling regimes using a combination of variational, diagrammatic, and mean-field approaches. We reveal how the coupling between linear and angular momenta affects stable quasiparticle states, and demonstrate that internal rotation leads to an enhanced self-localization in the translational degrees of freedom. article_number: '224506' article_processing_charge: No author: - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Bikashkali full_name: Midya, Bikashkali id: 456187FC-F248-11E8-B48F-1D18A9856A87 last_name: Midya - first_name: Andreas full_name: Deuchert, Andreas id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87 last_name: Deuchert orcid: 0000-0003-3146-6746 - first_name: Nikolai K full_name: Leopold, Nikolai K id: 4BC40BEC-F248-11E8-B48F-1D18A9856A87 last_name: Leopold orcid: 0000-0002-0495-6822 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: 'Yakaboylu E, Midya B, Deuchert A, Leopold NK, Lemeshko M. Theory of the rotating polaron: Spectrum and self-localization. Physical Review B. 2018;98(22). doi:10.1103/physrevb.98.224506' apa: 'Yakaboylu, E., Midya, B., Deuchert, A., Leopold, N. K., & Lemeshko, M. (2018). Theory of the rotating polaron: Spectrum and self-localization. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.98.224506' chicago: 'Yakaboylu, Enderalp, Bikashkali Midya, Andreas Deuchert, Nikolai K Leopold, and Mikhail Lemeshko. “Theory of the Rotating Polaron: Spectrum and Self-Localization.” Physical Review B. American Physical Society, 2018. https://doi.org/10.1103/physrevb.98.224506.' ieee: 'E. Yakaboylu, B. Midya, A. Deuchert, N. K. Leopold, and M. Lemeshko, “Theory of the rotating polaron: Spectrum and self-localization,” Physical Review B, vol. 98, no. 22. American Physical Society, 2018.' ista: 'Yakaboylu E, Midya B, Deuchert A, Leopold NK, Lemeshko M. 2018. Theory of the rotating polaron: Spectrum and self-localization. Physical Review B. 98(22), 224506.' mla: 'Yakaboylu, Enderalp, et al. “Theory of the Rotating Polaron: Spectrum and Self-Localization.” Physical Review B, vol. 98, no. 22, 224506, American Physical Society, 2018, doi:10.1103/physrevb.98.224506.' short: E. Yakaboylu, B. Midya, A. Deuchert, N.K. Leopold, M. Lemeshko, Physical Review B 98 (2018). date_created: 2019-02-14T10:37:09Z date_published: 2018-12-12T00:00:00Z date_updated: 2023-09-19T14:29:03Z day: '12' department: - _id: MiLe - _id: RoSe doi: 10.1103/physrevb.98.224506 ec_funded: 1 external_id: arxiv: - '1809.01204' isi: - '000452992700008' intvolume: ' 98' isi: 1 issue: '22' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1809.01204 month: '12' oa: 1 oa_version: Preprint project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Theory of the rotating polaron: Spectrum and self-localization' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 98 year: '2018' ... --- _id: '435' abstract: - lang: eng text: It is shown that two fundamentally different phenomena, the bound states in continuum and the spectral singularity (or time-reversed spectral singularity), can occur simultaneously. This can be achieved in a rectangular core dielectric waveguide with an embedded active (or absorbing) layer. In such a system a two-dimensional bound state in a continuum is created in the plane of a waveguide cross section, and it is emitted or absorbed along the waveguide core. The idea can be used for experimental implementation of a laser or a coherent-perfect-absorber for a photonic bound state that resides in a continuous spectrum. acknowledgement: 'Seventh Framework Programme (FP7) People: Marie-Curie Actions (PEOPLE) (291734). B. M. acknowledges the financial support by the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/ 2007-2013) under REA.' article_processing_charge: No author: - first_name: Bikashkali full_name: Midya, Bikashkali id: 456187FC-F248-11E8-B48F-1D18A9856A87 last_name: Midya - first_name: Vladimir full_name: Konotop, Vladimir last_name: Konotop citation: ama: Midya B, Konotop V. Coherent-perfect-absorber and laser for bound states in a continuum. Optics Letters. 2018;43(3):607-610. doi:10.1364/OL.43.000607 apa: Midya, B., & Konotop, V. (2018). Coherent-perfect-absorber and laser for bound states in a continuum. Optics Letters. Optica  Publishing Group. https://doi.org/10.1364/OL.43.000607 chicago: Midya, Bikashkali, and Vladimir Konotop. “Coherent-Perfect-Absorber and Laser for Bound States in a Continuum.” Optics Letters. Optica  Publishing Group, 2018. https://doi.org/10.1364/OL.43.000607. ieee: B. Midya and V. Konotop, “Coherent-perfect-absorber and laser for bound states in a continuum,” Optics Letters, vol. 43, no. 3. Optica  Publishing Group, pp. 607–610, 2018. ista: Midya B, Konotop V. 2018. Coherent-perfect-absorber and laser for bound states in a continuum. Optics Letters. 43(3), 607–610. mla: Midya, Bikashkali, and Vladimir Konotop. “Coherent-Perfect-Absorber and Laser for Bound States in a Continuum.” Optics Letters, vol. 43, no. 3, Optica  Publishing Group, 2018, pp. 607–10, doi:10.1364/OL.43.000607. short: B. Midya, V. Konotop, Optics Letters 43 (2018) 607–610. date_created: 2018-12-11T11:46:27Z date_published: 2018-02-01T00:00:00Z date_updated: 2023-10-17T12:15:06Z day: '01' department: - _id: MiLe doi: 10.1364/OL.43.000607 ec_funded: 1 external_id: arxiv: - '1711.01986' isi: - '000423776600066' intvolume: ' 43' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1711.01986 month: '02' oa: 1 oa_version: Preprint page: 607 - 610 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Optics Letters publication_status: published publisher: Optica Publishing Group publist_id: '7388' quality_controlled: '1' scopus_import: '1' status: public title: Coherent-perfect-absorber and laser for bound states in a continuum type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 43 year: '2018' ... --- _id: '415' abstract: - lang: eng text: Recently it was shown that a molecule rotating in a quantum solvent can be described in terms of the “angulon” quasiparticle [M. Lemeshko, Phys. Rev. Lett. 118, 095301 (2017)]. Here we extend the angulon theory to the case of molecules possessing an additional spin-1/2 degree of freedom and study the behavior of the system in the presence of a static magnetic field. We show that exchange of angular momentum between the molecule and the solvent can be altered by the field, even though the solvent itself is non-magnetic. In particular, we demonstrate a possibility to control resonant emission of phonons with a given angular momentum using a magnetic field. acknowledgement: "We acknowledge insightful discussions with Giacomo Bighin, Igor Cherepanov, Johan Mentink, and Enderalp Yakaboylu. This work was supported by the Austrian Science Fund (FWF), Project No. P29902-N27. W.R. was supported by the Polish Ministry of Science and Higher Education Grant No. MNISW/2016/DIR/285/NN and by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385.\r\n" article_number: '104307' article_processing_charge: No article_type: original author: - first_name: Wojciech full_name: Rzadkowski, Wojciech id: 48C55298-F248-11E8-B48F-1D18A9856A87 last_name: Rzadkowski orcid: 0000-0002-1106-4419 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Rzadkowski W, Lemeshko M. Effect of a magnetic field on molecule–solvent angular momentum transfer. The Journal of Chemical Physics. 2018;148(10). doi:10.1063/1.5017591 apa: Rzadkowski, W., & Lemeshko, M. (2018). Effect of a magnetic field on molecule–solvent angular momentum transfer. The Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/1.5017591 chicago: Rzadkowski, Wojciech, and Mikhail Lemeshko. “Effect of a Magnetic Field on Molecule–Solvent Angular Momentum Transfer.” The Journal of Chemical Physics. AIP Publishing, 2018. https://doi.org/10.1063/1.5017591. ieee: W. Rzadkowski and M. Lemeshko, “Effect of a magnetic field on molecule–solvent angular momentum transfer,” The Journal of Chemical Physics, vol. 148, no. 10. AIP Publishing, 2018. ista: Rzadkowski W, Lemeshko M. 2018. Effect of a magnetic field on molecule–solvent angular momentum transfer. The Journal of Chemical Physics. 148(10), 104307. mla: Rzadkowski, Wojciech, and Mikhail Lemeshko. “Effect of a Magnetic Field on Molecule–Solvent Angular Momentum Transfer.” The Journal of Chemical Physics, vol. 148, no. 10, 104307, AIP Publishing, 2018, doi:10.1063/1.5017591. short: W. Rzadkowski, M. Lemeshko, The Journal of Chemical Physics 148 (2018). date_created: 2018-12-11T11:46:21Z date_published: 2018-03-14T00:00:00Z date_updated: 2024-02-28T13:01:59Z day: '14' department: - _id: MiLe doi: 10.1063/1.5017591 ec_funded: 1 external_id: arxiv: - '1711.09904' isi: - '000427517200065' intvolume: ' 148' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1711.09904 month: '03' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: The Journal of Chemical Physics publication_status: published publisher: AIP Publishing publist_id: '7408' quality_controlled: '1' related_material: record: - id: '10759' relation: dissertation_contains status: public scopus_import: '1' status: public title: Effect of a magnetic field on molecule–solvent angular momentum transfer type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 148 year: '2018' ... --- _id: '6339' abstract: - lang: eng text: We introduce a diagrammatic Monte Carlo approach to angular momentum properties of quantum many-particle systems possessing a macroscopic number of degrees of freedom. The treatment is based on a diagrammatic expansion that merges the usual Feynman diagrams with the angular momentum diagrams known from atomic and nuclear structure theory, thereby incorporating the non-Abelian algebra inherent to quantum rotations. Our approach is applicable at arbitrary coupling, is free of systematic errors and of finite-size effects, and naturally provides access to the impurity Green function. We exemplify the technique by obtaining an all-coupling solution of the angulon model; however, the method is quite general and can be applied to a broad variety of systems in which particles exchange quantum angular momentum with their many-body environment. article_number: '165301' article_processing_charge: No author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Timur full_name: Tscherbul, Timur last_name: Tscherbul - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Bighin G, Tscherbul T, Lemeshko M. Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems. Physical Review Letters. 2018;121(16). doi:10.1103/physrevlett.121.165301 apa: Bighin, G., Tscherbul, T., & Lemeshko, M. (2018). Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.121.165301 chicago: Bighin, Giacomo, Timur Tscherbul, and Mikhail Lemeshko. “Diagrammatic Monte Carlo Approach to Angular Momentum in Quantum Many-Particle Systems.” Physical Review Letters. American Physical Society, 2018. https://doi.org/10.1103/physrevlett.121.165301. ieee: G. Bighin, T. Tscherbul, and M. Lemeshko, “Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems,” Physical Review Letters, vol. 121, no. 16. American Physical Society, 2018. ista: Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems. Physical Review Letters. 121(16), 165301. mla: Bighin, Giacomo, et al. “Diagrammatic Monte Carlo Approach to Angular Momentum in Quantum Many-Particle Systems.” Physical Review Letters, vol. 121, no. 16, 165301, American Physical Society, 2018, doi:10.1103/physrevlett.121.165301. short: G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018). date_created: 2019-04-17T10:53:38Z date_published: 2018-10-16T00:00:00Z date_updated: 2024-02-28T13:15:09Z day: '16' department: - _id: MiLe doi: 10.1103/physrevlett.121.165301 external_id: arxiv: - '1803.07990' isi: - '000447468400008' intvolume: ' 121' isi: 1 issue: '16' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1803.07990 month: '10' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review Letters publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/description-of-rotating-molecules-made-easy/ scopus_import: '1' status: public title: Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2018' ... --- _id: '417' abstract: - lang: eng text: 'We introduce a Diagrammatic Monte Carlo (DiagMC) approach to complex molecular impurities with rotational degrees of freedom interacting with a many-particle environment. The treatment is based on the diagrammatic expansion that merges the usual Feynman diagrams with the angular momentum diagrams known from atomic and nuclear structure theory, thereby incorporating the non-Abelian algebra inherent to quantum rotations. Our approach works at arbitrary coupling, is free of systematic errors and of finite size effects, and naturally provides access to the impurity Green function. We exemplify the technique by obtaining an all-coupling solution of the angulon model, however, the method is quite general and can be applied to a broad variety of quantum impurities possessing angular momentum degrees of freedom. ' article_number: '165301' article_processing_charge: No author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Timur full_name: Tscherbul, Timur last_name: Tscherbul - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Bighin G, Tscherbul T, Lemeshko M. Diagrammatic Monte Carlo approach to rotating molecular impurities. Physical Review Letters. 2018;121(16). doi:10.1103/PhysRevLett.121.165301 apa: Bighin, G., Tscherbul, T., & Lemeshko, M. (2018). Diagrammatic Monte Carlo approach to rotating molecular impurities. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.121.165301 chicago: Bighin, Giacomo, Timur Tscherbul, and Mikhail Lemeshko. “Diagrammatic Monte Carlo Approach to Rotating Molecular Impurities.” Physical Review Letters. American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.165301. ieee: G. Bighin, T. Tscherbul, and M. Lemeshko, “Diagrammatic Monte Carlo approach to rotating molecular impurities,” Physical Review Letters, vol. 121, no. 16. American Physical Society, 2018. ista: Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach to rotating molecular impurities. Physical Review Letters. 121(16), 165301. mla: Bighin, Giacomo, et al. “Diagrammatic Monte Carlo Approach to Rotating Molecular Impurities.” Physical Review Letters, vol. 121, no. 16, 165301, American Physical Society, 2018, doi:10.1103/PhysRevLett.121.165301. short: G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018). date_created: 2018-12-11T11:46:22Z date_published: 2018-10-16T00:00:00Z date_updated: 2024-02-28T13:14:53Z day: '16' department: - _id: MiLe doi: 10.1103/PhysRevLett.121.165301 external_id: arxiv: - '1803.07990' intvolume: ' 121' issue: '16' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1803.07990 month: '10' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '8025' quality_controlled: '1' scopus_import: '1' status: public title: Diagrammatic Monte Carlo approach to rotating molecular impurities type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2018' ... --- _id: '313' abstract: - lang: eng text: 'Tunneling of a particle through a potential barrier remains one of the most remarkable quantum phenomena. Owing to advances in laser technology, electric fields comparable to those electrons experience in atoms are readily generated and open opportunities to dynamically investigate the process of electron tunneling through the potential barrier formed by the superposition of both laser and atomic fields. Attosecond-time and angstrom-space resolution of the strong laser-field technique allow to address fundamental questions related to tunneling, which are still open and debated: Which time is spent under the barrier and what momentum is picked up by the particle in the meantime? In this combined experimental and theoretical study we demonstrate that for strong-field ionization the leading quantum mechanical Wigner treatment for the time resolved description of tunneling is valid. We achieve a high sensitivity on the tunneling barrier and unambiguously isolate its effects by performing a differential study of two systems with almost identical tunneling geometry. Moreover, working with a low frequency laser, we essentially limit the non-adiabaticity of the process as a major source of uncertainty. The agreement between experiment and theory implies two substantial corrections with respect to the widely employed quasiclassical treatment: In addition to a non-vanishing longitudinal momentum along the laser field-direction we provide clear evidence for a non-zero tunneling time delay. This addresses also the fundamental question how the transition occurs from the tunnel barrier to free space classical evolution of the ejected electron.' alternative_title: - 'Journal of Physics: Conference Series' article_number: '012004' author: - first_name: Nicolas full_name: Camus, Nicolas last_name: Camus - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Lutz full_name: Fechner, Lutz last_name: Fechner - first_name: Michael full_name: Klaiber, Michael last_name: Klaiber - first_name: Martin full_name: Laux, Martin last_name: Laux - first_name: Yonghao full_name: Mi, Yonghao last_name: Mi - first_name: Karen full_name: Hatsagortsyan, Karen last_name: Hatsagortsyan - first_name: Thomas full_name: Pfeifer, Thomas last_name: Pfeifer - first_name: Cristoph full_name: Keitel, Cristoph last_name: Keitel - first_name: Robert full_name: Moshammer, Robert last_name: Moshammer citation: ama: 'Camus N, Yakaboylu E, Fechner L, et al. Experimental evidence for Wigner’s tunneling time. In: Vol 999. American Physical Society; 2017. doi:10.1088/1742-6596/999/1/012004' apa: 'Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer, R. (2017). Experimental evidence for Wigner’s tunneling time (Vol. 999). Presented at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian Federation: American Physical Society. https://doi.org/10.1088/1742-6596/999/1/012004' chicago: Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin Laux, Yonghao Mi, Karen Hatsagortsyan, Thomas Pfeifer, Cristoph Keitel, and Robert Moshammer. “Experimental Evidence for Wigner’s Tunneling Time,” Vol. 999. American Physical Society, 2017. https://doi.org/10.1088/1742-6596/999/1/012004. ieee: N. Camus et al., “Experimental evidence for Wigner’s tunneling time,” presented at the Annual International Laser Physics Workshop LPHYS, Kazan, Russian Federation, 2017, vol. 999, no. 1. ista: 'Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan K, Pfeifer T, Keitel C, Moshammer R. 2017. Experimental evidence for Wigner’s tunneling time. Annual International Laser Physics Workshop LPHYS, Journal of Physics: Conference Series, vol. 999, 012004.' mla: Camus, Nicolas, et al. Experimental Evidence for Wigner’s Tunneling Time. Vol. 999, no. 1, 012004, American Physical Society, 2017, doi:10.1088/1742-6596/999/1/012004. short: N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K. Hatsagortsyan, T. Pfeifer, C. Keitel, R. Moshammer, in:, American Physical Society, 2017. conference: end_date: 2017-08-21 location: Kazan, Russian Federation name: Annual International Laser Physics Workshop LPHYS start_date: 2017-08-17 date_created: 2018-12-11T11:45:46Z date_published: 2017-07-14T00:00:00Z date_updated: 2023-02-23T12:36:07Z day: '14' ddc: - '530' department: - _id: MiLe doi: 10.1088/1742-6596/999/1/012004 external_id: arxiv: - '1611.03701' file: - access_level: open_access checksum: 6e70b525a84f6d5fb175c48e9f5cb59a content_type: application/pdf creator: dernst date_created: 2019-01-22T08:34:10Z date_updated: 2020-07-14T12:46:00Z file_id: '5871' file_name: 2017_Physics_Camus.pdf file_size: 949321 relation: main_file file_date_updated: 2020-07-14T12:46:00Z has_accepted_license: '1' intvolume: ' 999' issue: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version publication_identifier: issn: - '17426588' publication_status: published publisher: American Physical Society publist_id: '7552' quality_controlled: '1' related_material: record: - id: '6013' relation: later_version status: public scopus_import: 1 status: public title: Experimental evidence for Wigner's tunneling time tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 999 year: '2017' ... --- _id: '6013' abstract: - lang: eng text: The first hundred attoseconds of the electron dynamics during strong field tunneling ionization are investigated. We quantify theoretically how the electron’s classical trajectories in the continuum emerge from the tunneling process and test the results with those achieved in parallel from attoclock measurements. An especially high sensitivity on the tunneling barrier is accomplished here by comparing the momentum distributions of two atomic species of slightly deviating atomic potentials (argon and krypton) being ionized under absolutely identical conditions with near-infrared laser pulses (1300 nm). The agreement between experiment and theory provides clear evidence for a nonzero tunneling time delay and a nonvanishing longitudinal momentum of the electron at the “tunnel exit.” article_number: '023201' author: - first_name: Nicolas full_name: Camus, Nicolas last_name: Camus - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Lutz full_name: Fechner, Lutz last_name: Fechner - first_name: Michael full_name: Klaiber, Michael last_name: Klaiber - first_name: Martin full_name: Laux, Martin last_name: Laux - first_name: Yonghao full_name: Mi, Yonghao last_name: Mi - first_name: Karen Z. full_name: Hatsagortsyan, Karen Z. last_name: Hatsagortsyan - first_name: Thomas full_name: Pfeifer, Thomas last_name: Pfeifer - first_name: Christoph H. full_name: Keitel, Christoph H. last_name: Keitel - first_name: Robert full_name: Moshammer, Robert last_name: Moshammer citation: ama: Camus N, Yakaboylu E, Fechner L, et al. Experimental evidence for quantum tunneling time. Physical Review Letters. 2017;119(2). doi:10.1103/PhysRevLett.119.023201 apa: Camus, N., Yakaboylu, E., Fechner, L., Klaiber, M., Laux, M., Mi, Y., … Moshammer, R. (2017). Experimental evidence for quantum tunneling time. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.119.023201 chicago: Camus, Nicolas, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin Laux, Yonghao Mi, Karen Z. Hatsagortsyan, Thomas Pfeifer, Christoph H. Keitel, and Robert Moshammer. “Experimental Evidence for Quantum Tunneling Time.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.023201. ieee: N. Camus et al., “Experimental evidence for quantum tunneling time,” Physical Review Letters, vol. 119, no. 2. American Physical Society, 2017. ista: Camus N, Yakaboylu E, Fechner L, Klaiber M, Laux M, Mi Y, Hatsagortsyan KZ, Pfeifer T, Keitel CH, Moshammer R. 2017. Experimental evidence for quantum tunneling time. Physical Review Letters. 119(2), 023201. mla: Camus, Nicolas, et al. “Experimental Evidence for Quantum Tunneling Time.” Physical Review Letters, vol. 119, no. 2, 023201, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.023201. short: N. Camus, E. Yakaboylu, L. Fechner, M. Klaiber, M. Laux, Y. Mi, K.Z. Hatsagortsyan, T. Pfeifer, C.H. Keitel, R. Moshammer, Physical Review Letters 119 (2017). date_created: 2019-02-14T15:24:13Z date_published: 2017-07-14T00:00:00Z date_updated: 2023-02-23T11:13:36Z day: '14' department: - _id: MiLe doi: 10.1103/PhysRevLett.119.023201 external_id: arxiv: - '1611.03701' intvolume: ' 119' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1611.03701 month: '07' oa: 1 oa_version: Preprint publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '313' relation: earlier_version status: public scopus_import: 1 status: public title: Experimental evidence for quantum tunneling time type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2017' ... --- _id: '604' abstract: - lang: eng text: In several settings of physics and chemistry one has to deal with molecules interacting with some kind of an external environment, be it a gas, a solution, or a crystal surface. Understanding molecular processes in the presence of such a many-particle bath is inherently challenging, and usually requires large-scale numerical computations. Here, we present an alternative approach to the problem, based on the notion of the angulon quasiparticle. We show that molecules rotating inside superfluid helium nanodroplets and Bose–Einstein condensates form angulons, and therefore can be described by straightforward solutions of a simple microscopic Hamiltonian. Casting the problem in the language of angulons allows us not only to greatly simplify it, but also to gain insights into the origins of the observed phenomena and to make predictions for future experimental studies. alternative_title: - Theoretical and Computational Chemistry Series author: - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Richard full_name: Schmidt, Richard last_name: Schmidt citation: ama: 'Lemeshko M, Schmidt R. Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In: Dulieu O, Osterwalder A, eds. Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero . Vol 11. Theoretical and Computational Chemistry Series. The Royal Society of Chemistry; 2017:444-495. doi:10.1039/9781782626800-00444' apa: 'Lemeshko, M., & Schmidt, R. (2017). Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In O. Dulieu & A. Osterwalder (Eds.), Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero (Vol. 11, pp. 444–495). The Royal Society of Chemistry. https://doi.org/10.1039/9781782626800-00444' chicago: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.” In Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero , edited by Oliver Dulieu and Andreas Osterwalder, 11:444–95. Theoretical and Computational Chemistry Series. The Royal Society of Chemistry, 2017. https://doi.org/10.1039/9781782626800-00444.' ieee: 'M. Lemeshko and R. Schmidt, “Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets,” in Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero , vol. 11, O. Dulieu and A. Osterwalder, Eds. The Royal Society of Chemistry, 2017, pp. 444–495.' ista: 'Lemeshko M, Schmidt R. 2017.Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets. In: Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero . Theoretical and Computational Chemistry Series, vol. 11, 444–495.' mla: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.” Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero , edited by Oliver Dulieu and Andreas Osterwalder, vol. 11, The Royal Society of Chemistry, 2017, pp. 444–95, doi:10.1039/9781782626800-00444.' short: 'M. Lemeshko, R. Schmidt, in:, O. Dulieu, A. Osterwalder (Eds.), Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero , The Royal Society of Chemistry, 2017, pp. 444–495.' date_created: 2018-12-11T11:47:27Z date_published: 2017-12-14T00:00:00Z date_updated: 2021-01-12T08:05:50Z day: '14' department: - _id: MiLe doi: 10.1039/9781782626800-00444 editor: - first_name: Oliver full_name: Dulieu, Oliver last_name: Dulieu - first_name: Andreas full_name: Osterwalder, Andreas last_name: Osterwalder intvolume: ' 11' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1703.06753 month: '12' oa: 1 oa_version: Submitted Version page: 444 - 495 publication: 'Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero ' publication_identifier: issn: - '20413181' publication_status: published publisher: The Royal Society of Chemistry publist_id: '7201' quality_controlled: '1' scopus_import: 1 series_title: Theoretical and Computational Chemistry Series status: public title: 'Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets' type: book_chapter user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 11 year: '2017' ... --- _id: '1162' abstract: - lang: eng text: Selected universal experimental properties of high-temperature superconducting (HTS) cuprates have been singled out in the last decade. One of the pivotal challenges in this field is the designation of a consistent interpretation framework within which we can describe quantitatively the universal features of those systems. Here we analyze in a detailed manner the principal experimental data and compare them quantitatively with the approach based on a single-band model of strongly correlated electrons supplemented with strong antiferromagnetic (super)exchange interaction (the so-called t−J−U model). The model rationale is provided by estimating its microscopic parameters on the basis of the three-band approach for the Cu-O plane. We use our original full Gutzwiller wave-function solution by going beyond the renormalized mean-field theory (RMFT) in a systematic manner. Our approach reproduces very well the observed hole doping (δ) dependence of the kinetic-energy gain in the superconducting phase, one of the principal non-Bardeen-Cooper-Schrieffer features of the cuprates. The calculated Fermi velocity in the nodal direction is practically δ-independent and its universal value agrees very well with that determined experimentally. Also, a weak doping dependence of the Fermi wave vector leads to an almost constant value of the effective mass in a pure superconducting phase which is both observed in experiment and reproduced within our approach. An assessment of the currently used models (t−J, Hubbard) is carried out and the results of the canonical RMFT as a zeroth-order solution are provided for comparison to illustrate the necessity of the introduced higher-order contributions. article_number: '024506' article_processing_charge: No author: - first_name: Jozef full_name: Spałek, Jozef last_name: Spałek - first_name: Michał full_name: Zegrodnik, Michał last_name: Zegrodnik - first_name: Jan full_name: Kaczmarczyk, Jan id: 46C405DE-F248-11E8-B48F-1D18A9856A87 last_name: Kaczmarczyk orcid: 0000-0002-1629-3675 citation: ama: Spałek J, Zegrodnik M, Kaczmarczyk J. Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. Physical Review B - Condensed Matter and Materials Physics. 2017;95(2). doi:10.1103/PhysRevB.95.024506 apa: Spałek, J., Zegrodnik, M., & Kaczmarczyk, J. (2017). Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.95.024506 chicago: Spałek, Jozef, Michał Zegrodnik, and Jan Kaczmarczyk. “Universal Properties of High Temperature Superconductors from Real Space Pairing T-J-U Model and Its Quantitative Comparison with Experiment.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.95.024506. ieee: J. Spałek, M. Zegrodnik, and J. Kaczmarczyk, “Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment,” Physical Review B - Condensed Matter and Materials Physics, vol. 95, no. 2. American Physical Society, 2017. ista: Spałek J, Zegrodnik M, Kaczmarczyk J. 2017. Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment. Physical Review B - Condensed Matter and Materials Physics. 95(2), 024506. mla: Spałek, Jozef, et al. “Universal Properties of High Temperature Superconductors from Real Space Pairing T-J-U Model and Its Quantitative Comparison with Experiment.” Physical Review B - Condensed Matter and Materials Physics, vol. 95, no. 2, 024506, American Physical Society, 2017, doi:10.1103/PhysRevB.95.024506. short: J. Spałek, M. Zegrodnik, J. Kaczmarczyk, Physical Review B - Condensed Matter and Materials Physics 95 (2017). date_created: 2018-12-11T11:50:29Z date_published: 2017-01-13T00:00:00Z date_updated: 2023-09-20T11:25:56Z day: '13' department: - _id: MiLe doi: 10.1103/PhysRevB.95.024506 ec_funded: 1 external_id: isi: - '000391852800006' intvolume: ' 95' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1606.03247 month: '01' oa: 1 oa_version: Submitted Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Physical Review B - Condensed Matter and Materials Physics publication_identifier: issn: - '24699950' publication_status: published publisher: American Physical Society publist_id: '6195' quality_controlled: '1' scopus_import: '1' status: public title: Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 95 year: '2017' ... --- _id: '1163' abstract: - lang: eng text: 'We investigate the effect of the electron-hole (e-h) symmetry breaking on d-wave superconductivity induced by non-local effects of correlations in the generalized Hubbard model. The symmetry breaking is introduced in a two-fold manner: by the next-to-nearest neighbor hopping of electrons and by the charge-bond interaction - the off-diagonal term of the Coulomb potential. Both terms lead to a pronounced asymmetry of the superconducting order parameter. The next-to-nearest neighbor hopping enhances superconductivity for h-doping, while diminishes it for e-doping. The charge-bond interaction alone leads to the opposite effect and, additionally, to the kinetic-energy gain upon condensation in the underdoped regime. With both terms included, with similar amplitudes, the height of the superconducting dome and the critical doping remain in favor of h-doping. The influence of the charge-bond interaction on deviations from symmetry of the shape of the gap at the Fermi surface in the momentum space is briefly discussed.' article_number: '085604' article_processing_charge: No author: - first_name: Marcin full_name: Wysokiński, Marcin last_name: Wysokiński - first_name: Jan full_name: Kaczmarczyk, Jan id: 46C405DE-F248-11E8-B48F-1D18A9856A87 last_name: Kaczmarczyk orcid: 0000-0002-1629-3675 citation: ama: 'Wysokiński M, Kaczmarczyk J. Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics: Condensed Matter. 2017;29(8). doi:10.1088/1361-648X/aa532f' apa: 'Wysokiński, M., & Kaczmarczyk, J. (2017). Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics: Condensed Matter. IOP Publishing Ltd. https://doi.org/10.1088/1361-648X/aa532f' chicago: 'Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” Journal of Physics: Condensed Matter. IOP Publishing Ltd., 2017. https://doi.org/10.1088/1361-648X/aa532f.' ieee: 'M. Wysokiński and J. Kaczmarczyk, “Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms,” Journal of Physics: Condensed Matter, vol. 29, no. 8. IOP Publishing Ltd., 2017.' ista: 'Wysokiński M, Kaczmarczyk J. 2017. Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms. Journal of Physics: Condensed Matter. 29(8), 085604.' mla: 'Wysokiński, Marcin, and Jan Kaczmarczyk. “Unconventional Superconductivity in Generalized Hubbard Model Role of Electron–Hole Symmetry Breaking Terms.” Journal of Physics: Condensed Matter, vol. 29, no. 8, 085604, IOP Publishing Ltd., 2017, doi:10.1088/1361-648X/aa532f.' short: 'M. Wysokiński, J. Kaczmarczyk, Journal of Physics: Condensed Matter 29 (2017).' date_created: 2018-12-11T11:50:29Z date_published: 2017-01-16T00:00:00Z date_updated: 2023-09-20T11:25:32Z day: '16' department: - _id: MiLe doi: 10.1088/1361-648X/aa532f ec_funded: 1 external_id: isi: - '000393955500001' intvolume: ' 29' isi: 1 issue: '8' language: - iso: eng month: '01' oa_version: None project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: 'Journal of Physics: Condensed Matter' publication_identifier: issn: - '09538984' publication_status: published publisher: IOP Publishing Ltd. publist_id: '6194' quality_controlled: '1' scopus_import: '1' status: public title: Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 29 year: '2017' ... --- _id: '1120' abstract: - lang: eng text: 'The existence of a self-localization transition in the polaron problem has been under an active debate ever since Landau suggested it 83 years ago. Here we reveal the self-localization transition for the rotational analogue of the polaron -- the angulon quasiparticle. We show that, unlike for the polarons, self-localization of angulons occurs at finite impurity-bath coupling already at the mean-field level. The transition is accompanied by the spherical-symmetry breaking of the angulon ground state and a discontinuity in the first derivative of the ground-state energy. Moreover, the type of the symmetry breaking is dictated by the symmetry of the microscopic impurity-bath interaction, which leads to a number of distinct self-localized states. The predicted effects can potentially be addressed in experiments on cold molecules trapped in superfluid helium droplets and ultracold quantum gases, as well as on electronic excitations in solids and Bose-Einstein condensates. ' article_number: '033608' article_processing_charge: No author: - first_name: Xiang full_name: Li, Xiang id: 4B7E523C-F248-11E8-B48F-1D18A9856A87 last_name: Li - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Li X, Seiringer R, Lemeshko M. Angular self-localization of impurities rotating in a bosonic bath. Physical Review A. 2017;95(3). doi:10.1103/PhysRevA.95.033608 apa: Li, X., Seiringer, R., & Lemeshko, M. (2017). Angular self-localization of impurities rotating in a bosonic bath. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.95.033608 chicago: Li, Xiang, Robert Seiringer, and Mikhail Lemeshko. “Angular Self-Localization of Impurities Rotating in a Bosonic Bath.” Physical Review A. American Physical Society, 2017. https://doi.org/10.1103/PhysRevA.95.033608. ieee: X. Li, R. Seiringer, and M. Lemeshko, “Angular self-localization of impurities rotating in a bosonic bath,” Physical Review A, vol. 95, no. 3. American Physical Society, 2017. ista: Li X, Seiringer R, Lemeshko M. 2017. Angular self-localization of impurities rotating in a bosonic bath. Physical Review A. 95(3), 033608. mla: Li, Xiang, et al. “Angular Self-Localization of Impurities Rotating in a Bosonic Bath.” Physical Review A, vol. 95, no. 3, 033608, American Physical Society, 2017, doi:10.1103/PhysRevA.95.033608. short: X. Li, R. Seiringer, M. Lemeshko, Physical Review A 95 (2017). date_created: 2018-12-11T11:50:15Z date_published: 2017-03-06T00:00:00Z date_updated: 2023-09-20T11:30:58Z day: '06' department: - _id: MiLe - _id: RoSe doi: 10.1103/PhysRevA.95.033608 ec_funded: 1 external_id: isi: - '000395981900009' intvolume: ' 95' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1610.04908 month: '03' oa: 1 oa_version: Published Version project: - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems - _id: 25C878CE-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P27533_N27 name: Structure of the Excitation Spectrum for Many-Body Quantum Systems - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review A publication_identifier: issn: - '24699926' publication_status: published publisher: American Physical Society publist_id: '6242' quality_controlled: '1' related_material: record: - id: '8958' relation: dissertation_contains status: public scopus_import: '1' status: public title: Angular self-localization of impurities rotating in a bosonic bath type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 95 year: '2017' ... --- _id: '1133' abstract: - lang: eng text: 'It is a common knowledge that an effective interaction of a quantum impurity with an electromagnetic field can be screened by surrounding charge carriers, whether mobile or static. Here we demonstrate that very strong, "anomalous" screening can take place in the presence of a neutral, weakly polarizable environment, due to an exchange of orbital angular momentum between the impurity and the bath. Furthermore, we show that it is possible to generalize all phenomena related to isolated impurities in an external field to the case when a many-body environment is present, by casting the problem in terms of the angulon quasiparticle. As a result, the relevant observables such as the effective Rabi frequency, geometric phase, and impurity spatial alignment are straightforward to evaluate in terms of a single parameter: the angular-momentum-dependent screening factor.' article_number: '085302' article_processing_charge: No author: - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Yakaboylu E, Lemeshko M. Anomalous screening of quantum impurities by a neutral environment. Physical Review Letters. 2017;118(8). doi:10.1103/PhysRevLett.118.085302 apa: Yakaboylu, E., & Lemeshko, M. (2017). Anomalous screening of quantum impurities by a neutral environment. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.118.085302 chicago: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum Impurities by a Neutral Environment.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.085302. ieee: E. Yakaboylu and M. Lemeshko, “Anomalous screening of quantum impurities by a neutral environment,” Physical Review Letters, vol. 118, no. 8. American Physical Society, 2017. ista: Yakaboylu E, Lemeshko M. 2017. Anomalous screening of quantum impurities by a neutral environment. Physical Review Letters. 118(8), 085302. mla: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anomalous Screening of Quantum Impurities by a Neutral Environment.” Physical Review Letters, vol. 118, no. 8, 085302, American Physical Society, 2017, doi:10.1103/PhysRevLett.118.085302. short: E. Yakaboylu, M. Lemeshko, Physical Review Letters 118 (2017). date_created: 2018-12-11T11:50:19Z date_published: 2017-02-22T00:00:00Z date_updated: 2023-09-20T11:30:08Z day: '22' department: - _id: MiLe doi: 10.1103/PhysRevLett.118.085302 ec_funded: 1 external_id: isi: - '000394667600003' intvolume: ' 118' isi: 1 issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1612.02820 month: '02' oa: 1 oa_version: Submitted Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review Letters publication_identifier: issn: - '00319007' publication_status: published publisher: American Physical Society publist_id: '6225' quality_controlled: '1' scopus_import: '1' status: public title: Anomalous screening of quantum impurities by a neutral environment type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 118 year: '2017' ... --- _id: '1119' abstract: - lang: eng text: Understanding the behavior of molecules interacting with superfluid helium represents a formidable challenge and, in general, requires approaches relying on large-scale numerical simulations. Here we demonstrate that experimental data collected over the last 20 years provide evidence that molecules immersed in superfluid helium form recently-predicted angulon quasiparticles [Phys. Rev. Lett. 114, 203001 (2015)]. Most importantly, casting the many-body problem in terms of angulons amounts to a drastic simplification and yields effective molecular moments of inertia as straightforward analytic solutions of a simple microscopic Hamiltonian. The outcome of the angulon theory is in good agreement with experiment for a broad range of molecular impurities, from heavy to medium-mass to light species. These results pave the way to understanding molecular rotation in liquid and crystalline phases in terms of the angulon quasiparticle. article_number: '095301' article_processing_charge: No author: - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 citation: ama: Lemeshko M. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 2017;118(9). doi:10.1103/PhysRevLett.118.095301 apa: Lemeshko, M. (2017). Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.118.095301 chicago: Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.095301. ieee: M. Lemeshko, “Quasiparticle approach to molecules interacting with quantum solvents,” Physical Review Letters, vol. 118, no. 9. American Physical Society, 2017. ista: Lemeshko M. 2017. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 118(9), 095301. mla: Lemeshko, Mikhail. “Quasiparticle Approach to Molecules Interacting with Quantum Solvents.” Physical Review Letters, vol. 118, no. 9, 095301, American Physical Society, 2017, doi:10.1103/PhysRevLett.118.095301. short: M. Lemeshko, Physical Review Letters 118 (2017). date_created: 2018-12-11T11:50:15Z date_published: 2017-02-27T00:00:00Z date_updated: 2023-09-20T11:31:22Z day: '27' department: - _id: MiLe doi: 10.1103/PhysRevLett.118.095301 external_id: isi: - '000404769200006' intvolume: ' 118' isi: 1 issue: '9' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1610.01604 month: '02' oa: 1 oa_version: Submitted Version project: - _id: 25636330-B435-11E9-9278-68D0E5697425 grant_number: 11-NSF-1070 name: ROOTS Genome-wide Analysis of Root Traits publication: Physical Review Letters publication_identifier: issn: - '00319007' publication_status: published publisher: American Physical Society publist_id: '6243' quality_controlled: '1' status: public title: Quasiparticle approach to molecules interacting with quantum solvents type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 118 year: '2017' ... --- _id: '1109' abstract: - lang: eng text: 'Rotation of molecules embedded in He nanodroplets is explored by a combination of fs laser-induced alignment experiments and angulon quasiparticle theory. We demonstrate that at low fluence of the fs alignment pulse, the molecule and its solvation shell can be set into coherent collective rotation lasting long enough to form revivals. With increasing fluence, however, the revivals disappear -- instead, rotational dynamics as rapid as for an isolated molecule is observed during the first few picoseconds. Classical calculations trace this phenomenon to transient decoupling of the molecule from its He shell. Our results open novel opportunities for studying non-equilibrium solute-solvent dynamics and quantum thermalization. ' article_number: '203203' article_processing_charge: No author: - first_name: Benjamin full_name: Shepperson, Benjamin last_name: Shepperson - first_name: Anders full_name: Søndergaard, Anders last_name: Søndergaard - first_name: Lars full_name: Christiansen, Lars last_name: Christiansen - first_name: Jan full_name: Kaczmarczyk, Jan id: 46C405DE-F248-11E8-B48F-1D18A9856A87 last_name: Kaczmarczyk orcid: 0000-0002-1629-3675 - first_name: Robert full_name: Zillich, Robert last_name: Zillich - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Henrik full_name: Stapelfeldt, Henrik last_name: Stapelfeldt citation: ama: 'Shepperson B, Søndergaard A, Christiansen L, et al. Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. Physical Review Letters. 2017;118(20). doi:10.1103/PhysRevLett.118.203203' apa: 'Shepperson, B., Søndergaard, A., Christiansen, L., Kaczmarczyk, J., Zillich, R., Lemeshko, M., & Stapelfeldt, H. (2017). Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.118.203203' chicago: 'Shepperson, Benjamin, Anders Søndergaard, Lars Christiansen, Jan Kaczmarczyk, Robert Zillich, Mikhail Lemeshko, and Henrik Stapelfeldt. “Laser-Induced Rotation of Iodine Molecules in Helium Nanodroplets: Revivals and Breaking-Free.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.118.203203.' ieee: 'B. Shepperson et al., “Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free,” Physical Review Letters, vol. 118, no. 20. American Physical Society, 2017.' ista: 'Shepperson B, Søndergaard A, Christiansen L, Kaczmarczyk J, Zillich R, Lemeshko M, Stapelfeldt H. 2017. Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free. Physical Review Letters. 118(20), 203203.' mla: 'Shepperson, Benjamin, et al. “Laser-Induced Rotation of Iodine Molecules in Helium Nanodroplets: Revivals and Breaking-Free.” Physical Review Letters, vol. 118, no. 20, 203203, American Physical Society, 2017, doi:10.1103/PhysRevLett.118.203203.' short: B. Shepperson, A. Søndergaard, L. Christiansen, J. Kaczmarczyk, R. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 118 (2017). date_created: 2018-12-11T11:50:12Z date_published: 2017-05-19T00:00:00Z date_updated: 2023-09-20T11:36:17Z day: '19' department: - _id: MiLe doi: 10.1103/PhysRevLett.118.203203 external_id: isi: - '000401664000005' intvolume: ' 118' isi: 1 issue: '20' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1702.01977 month: '05' oa: 1 oa_version: Preprint project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '6260' quality_controlled: '1' scopus_import: '1' status: public title: 'Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 118 year: '2017' ... --- _id: '1076' abstract: - lang: eng text: Signatures of the Coulomb corrections in the photoelectron momentum distribution during laser-induced ionization of atoms or ions in tunneling and multiphoton regimes are investigated analytically in the case of a one-dimensional problem. A high-order Coulomb-corrected strong-field approximation is applied, where the exact continuum state in the S matrix is approximated by the eikonal Coulomb-Volkov state including the second-order corrections to the eikonal. Although without high-order corrections our theory coincides with the known analytical R-matrix (ARM) theory, we propose a simplified procedure for the matrix element derivation. Rather than matching the eikonal Coulomb-Volkov wave function with the bound state as in the ARM theory to remove the Coulomb singularity, we calculate the matrix element via the saddle-point integration method by time as well as by coordinate, and in this way avoiding the Coulomb singularity. The momentum shift in the photoelectron momentum distribution with respect to the ARM theory due to high-order corrections is analyzed for tunneling and multiphoton regimes. The relation of the quantum corrections to the tunneling delay time is discussed. article_number: '023403' article_processing_charge: No author: - first_name: Michael full_name: Klaiber, Michael last_name: Klaiber - first_name: Jiří full_name: Daněk, Jiří last_name: Daněk - first_name: Enderalp full_name: Yakaboylu, Enderalp id: 38CB71F6-F248-11E8-B48F-1D18A9856A87 last_name: Yakaboylu orcid: 0000-0001-5973-0874 - first_name: Karen full_name: Hatsagortsyan, Karen last_name: Hatsagortsyan - first_name: Christoph full_name: Keitel, Christoph last_name: Keitel citation: ama: Klaiber M, Daněk J, Yakaboylu E, Hatsagortsyan K, Keitel C. Strong-field ionization via a high-order Coulomb-corrected strong-field approximation. Physical Review A - Atomic, Molecular, and Optical Physics. 2017;95(2). doi:10.1103/PhysRevA.95.023403 apa: Klaiber, M., Daněk, J., Yakaboylu, E., Hatsagortsyan, K., & Keitel, C. (2017). Strong-field ionization via a high-order Coulomb-corrected strong-field approximation. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.95.023403 chicago: Klaiber, Michael, Jiří Daněk, Enderalp Yakaboylu, Karen Hatsagortsyan, and Christoph Keitel. “Strong-Field Ionization via a High-Order Coulomb-Corrected Strong-Field Approximation.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevA.95.023403. ieee: M. Klaiber, J. Daněk, E. Yakaboylu, K. Hatsagortsyan, and C. Keitel, “Strong-field ionization via a high-order Coulomb-corrected strong-field approximation,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 95, no. 2. American Physical Society, 2017. ista: Klaiber M, Daněk J, Yakaboylu E, Hatsagortsyan K, Keitel C. 2017. Strong-field ionization via a high-order Coulomb-corrected strong-field approximation. Physical Review A - Atomic, Molecular, and Optical Physics. 95(2), 023403. mla: Klaiber, Michael, et al. “Strong-Field Ionization via a High-Order Coulomb-Corrected Strong-Field Approximation.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 95, no. 2, 023403, American Physical Society, 2017, doi:10.1103/PhysRevA.95.023403. short: M. Klaiber, J. Daněk, E. Yakaboylu, K. Hatsagortsyan, C. Keitel, Physical Review A - Atomic, Molecular, and Optical Physics 95 (2017). date_created: 2018-12-11T11:50:01Z date_published: 2017-02-01T00:00:00Z date_updated: 2023-09-20T11:57:23Z day: '01' department: - _id: MiLe doi: 10.1103/PhysRevA.95.023403 ec_funded: 1 external_id: isi: - '000400571700011' intvolume: ' 95' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1609.07018 month: '02' oa: 1 oa_version: Submitted Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: ' Physical Review A - Atomic, Molecular, and Optical Physics' publication_identifier: issn: - '24699926' publication_status: published publisher: American Physical Society publist_id: '6305' quality_controlled: '1' scopus_import: '1' status: public title: Strong-field ionization via a high-order Coulomb-corrected strong-field approximation type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 95 year: '2017' ... --- _id: '1015' abstract: - lang: eng text: 'Vortices are commonly observed in the context of classical hydrodynamics: from whirlpools after stirring the coffee in a cup to a violent atmospheric phenomenon such as a tornado, all classical vortices are characterized by an arbitrary circulation value of the local velocity field. On the other hand the appearance of vortices with quantized circulation represents one of the fundamental signatures of macroscopic quantum phenomena. In two-dimensional superfluids quantized vortices play a key role in determining finite-temperature properties, as the superfluid phase and the normal state are separated by a vortex unbinding transition, the Berezinskii-Kosterlitz-Thouless transition. Very recent experiments with two-dimensional superfluid fermions motivate the present work: we present theoretical results based on the renormalization group showing that the universal jump of the superfluid density and the critical temperature crucially depend on the interaction strength, providing a strong benchmark for forthcoming investigations.' article_number: '45702' article_processing_charge: No author: - first_name: Giacomo full_name: Bighin, Giacomo id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87 last_name: Bighin orcid: 0000-0001-8823-9777 - first_name: Luca full_name: Salasnich, Luca last_name: Salasnich citation: ama: Bighin G, Salasnich L. Vortices and antivortices in two-dimensional ultracold Fermi gases. Scientific Reports. 2017;7. doi:10.1038/srep45702 apa: Bighin, G., & Salasnich, L. (2017). Vortices and antivortices in two-dimensional ultracold Fermi gases. Scientific Reports. Nature Publishing Group. https://doi.org/10.1038/srep45702 chicago: Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional Ultracold Fermi Gases.” Scientific Reports. Nature Publishing Group, 2017. https://doi.org/10.1038/srep45702. ieee: G. Bighin and L. Salasnich, “Vortices and antivortices in two-dimensional ultracold Fermi gases,” Scientific Reports, vol. 7. Nature Publishing Group, 2017. ista: Bighin G, Salasnich L. 2017. Vortices and antivortices in two-dimensional ultracold Fermi gases. Scientific Reports. 7, 45702. mla: Bighin, Giacomo, and Luca Salasnich. “Vortices and Antivortices in Two-Dimensional Ultracold Fermi Gases.” Scientific Reports, vol. 7, 45702, Nature Publishing Group, 2017, doi:10.1038/srep45702. short: G. Bighin, L. Salasnich, Scientific Reports 7 (2017). date_created: 2018-12-11T11:49:42Z date_published: 2017-04-04T00:00:00Z date_updated: 2023-09-22T09:43:10Z day: '04' ddc: - '539' department: - _id: MiLe doi: 10.1038/srep45702 external_id: isi: - '000398148100001' file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:12:32Z date_updated: 2018-12-12T10:12:32Z file_id: '4950' file_name: IST-2017-809-v1+1_srep45702.pdf file_size: 478289 relation: main_file file_date_updated: 2018-12-12T10:12:32Z has_accepted_license: '1' intvolume: ' 7' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Published Version publication: Scientific Reports publication_identifier: issn: - '20452322' publication_status: published publisher: Nature Publishing Group publist_id: '6380' pubrep_id: '809' quality_controlled: '1' scopus_import: '1' status: public title: Vortices and antivortices in two-dimensional ultracold Fermi gases tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 7 year: '2017' ...