--- _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 license: https://creativecommons.org/licenses/by/4.0/ 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' ...