[{"doi":"10.1103/physrevb.102.144109","date_published":"2020-10-01T00:00:00Z","date_created":"2020-11-18T07:34:17Z","day":"01","publication":"Physical Review B","isi":1,"year":"2020","quality_controlled":"1","publisher":"American Physical Society","oa":1,"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).","title":"Quantum impurity model for anyons","author":[{"full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874","last_name":"Yakaboylu","first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0001-9666-3543","full_name":"Ghazaryan, Areg","last_name":"Ghazaryan","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","first_name":"Areg"},{"first_name":"D.","last_name":"Lundholm","full_name":"Lundholm, D."},{"first_name":"N.","last_name":"Rougerie","full_name":"Rougerie, N."},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Seiringer","full_name":"Seiringer, Robert","orcid":"0000-0002-6781-0521","first_name":"Robert","id":"4AFD0470-F248-11E8-B48F-1D18A9856A87"}],"article_processing_charge":"No","external_id":{"isi":["000582563300001"],"arxiv":["1912.07890"]},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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.","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.","short":"E. Yakaboylu, A. Ghazaryan, D. Lundholm, N. Rougerie, M. Lemeshko, R. Seiringer, Physical Review B 102 (2020).","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.","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","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."},"project":[{"call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships"},{"grant_number":"694227","name":"Analysis of quantum many-body systems","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"grant_number":"801770","name":"Angulon: physics and applications of a new quasiparticle","call_identifier":"H2020","_id":"2688CF98-B435-11E9-9278-68D0E5697425"}],"article_number":"144109","volume":102,"issue":"14","ec_funded":1,"language":[{"iso":"eng"}],"publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"publication_status":"published","month":"10","intvolume":" 102","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1912.07890"}],"oa_version":"Preprint","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."}],"department":[{"_id":"MiLe"},{"_id":"RoSe"}],"date_updated":"2023-09-05T12:12:30Z","status":"public","article_type":"original","type":"journal_article","_id":"8769"},{"date_created":"2020-09-30T10:33:17Z","date_published":"2020-04-27T00:00:00Z","doi":"10.1063/1.5144759","publication":"The Journal of Chemical Physics","day":"27","year":"2020","isi":1,"oa":1,"publisher":"AIP Publishing","quality_controlled":"1","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.","title":"Intermolecular forces and correlations mediated by a phonon bath","external_id":{"isi":["000530448300001"],"arxiv":["1912.02658"]},"article_processing_charge":"No","author":[{"first_name":"Xiang","id":"4B7E523C-F248-11E8-B48F-1D18A9856A87","last_name":"Li","full_name":"Li, Xiang"},{"orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","last_name":"Yakaboylu","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","first_name":"Enderalp"},{"id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","first_name":"Giacomo","last_name":"Bighin","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777"},{"first_name":"Richard","full_name":"Schmidt, Richard","last_name":"Schmidt"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"},{"orcid":"0000-0003-3146-6746","full_name":"Deuchert, Andreas","last_name":"Deuchert","first_name":"Andreas","id":"4DA65CD0-F248-11E8-B48F-1D18A9856A87"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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.","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.","short":"X. Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, A. Deuchert, The Journal of Chemical Physics 152 (2020).","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","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","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."},"project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment"},{"grant_number":"801770","name":"Angulon: physics and applications of a new quasiparticle","call_identifier":"H2020","_id":"2688CF98-B435-11E9-9278-68D0E5697425"},{"grant_number":"M02641","name":"A path-integral approach to composite impurities","_id":"26986C82-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"grant_number":"694227","name":"Analysis of quantum many-body systems","call_identifier":"H2020","_id":"25C6DC12-B435-11E9-9278-68D0E5697425"}],"article_number":"164302","ec_funded":1,"volume":152,"related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"8958"}]},"issue":"16","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["0021-9606"],"eissn":["1089-7690"]},"intvolume":" 152","month":"04","main_file_link":[{"url":"https://arxiv.org/abs/1912.02658","open_access":"1"}],"oa_version":"Preprint","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."}],"department":[{"_id":"MiLe"},{"_id":"RoSe"}],"date_updated":"2023-09-07T13:16:42Z","keyword":["Physical and Theoretical Chemistry","General Physics and Astronomy"],"status":"public","type":"journal_article","article_type":"original","_id":"8587"},{"department":[{"_id":"MiLe"}],"file_date_updated":"2020-10-12T12:18:47Z","date_updated":"2023-09-07T13:44:16Z","ddc":["530"],"article_type":"original","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","_id":"8644","related_material":{"record":[{"status":"public","id":"10759","relation":"dissertation_contains"}]},"issue":"9","volume":22,"license":"https://creativecommons.org/licenses/by/4.0/","ec_funded":1,"publication_identifier":{"issn":["13672630"]},"publication_status":"published","file":[{"access_level":"open_access","relation":"main_file","content_type":"application/pdf","checksum":"c9238fff422e7a957c3a0d559f756b3a","file_id":"8650","success":1,"creator":"dernst","date_updated":"2020-10-12T12:18:47Z","file_size":2725143,"date_created":"2020-10-12T12:18:47Z","file_name":"2020_NewJournalPhysics_Rzdkowski.pdf"}],"language":[{"iso":"eng"}],"scopus_import":"1","month":"09","intvolume":" 22","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."}],"oa_version":"Published Version","author":[{"first_name":"Wojciech","id":"48C55298-F248-11E8-B48F-1D18A9856A87","last_name":"Rzadkowski","full_name":"Rzadkowski, Wojciech","orcid":"0000-0002-1106-4419"},{"last_name":"Defenu","full_name":"Defenu, N","first_name":"N"},{"first_name":"S","full_name":"Chiacchiera, S","last_name":"Chiacchiera"},{"first_name":"A","last_name":"Trombettoni","full_name":"Trombettoni, A"},{"id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","first_name":"Giacomo","last_name":"Bighin","orcid":"0000-0001-8823-9777","full_name":"Bighin, Giacomo"}],"external_id":{"isi":["000573298000001"]},"article_processing_charge":"No","title":"Detecting composite orders in layered models via machine learning","citation":{"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.","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.","short":"W. Rzadkowski, N. Defenu, S. Chiacchiera, A. Trombettoni, G. Bighin, New Journal of Physics 22 (2020).","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","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","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.","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."},"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","project":[{"grant_number":"665385","name":"International IST Doctoral Program","call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"},{"_id":"05A235A0-7A3F-11EA-A408-12923DDC885E","grant_number":"25681","name":"Analytic and machine learning approaches to composite quantum impurities"},{"grant_number":"M02641","name":"A path-integral approach to composite impurities","_id":"26986C82-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"article_number":"093026","doi":"10.1088/1367-2630/abae44","date_published":"2020-09-01T00:00:00Z","date_created":"2020-10-11T22:01:14Z","isi":1,"has_accepted_license":"1","year":"2020","day":"01","publication":"New Journal of Physics","quality_controlled":"1","publisher":"IOP Publishing","oa":1,"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)."},{"department":[{"_id":"MiLe"}],"file_date_updated":"2020-12-30T07:18:03Z","ddc":["539"],"supervisor":[{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"}],"date_updated":"2023-09-20T11:30:58Z","status":"public","type":"dissertation","_id":"8958","related_material":{"record":[{"relation":"part_of_dissertation","status":"public","id":"5886"},{"relation":"part_of_dissertation","id":"8587","status":"public"},{"relation":"part_of_dissertation","id":"1120","status":"public"}]},"ec_funded":1,"file":[{"file_name":"THESIS_Xiang_Li.pdf","date_created":"2020-12-22T10:55:56Z","creator":"xli","file_size":3622305,"date_updated":"2020-12-22T10:55:56Z","success":1,"checksum":"3994c54a1241451d561db1d4f43bad30","file_id":"8967","relation":"main_file","access_level":"open_access","content_type":"application/pdf"},{"date_created":"2020-12-22T10:56:03Z","file_name":"THESIS_Xiang_Li.zip","date_updated":"2020-12-30T07:18:03Z","file_size":4018859,"creator":"xli","file_id":"8968","checksum":"0954ecfc5554c05615c14de803341f00","content_type":"application/x-zip-compressed","access_level":"closed","relation":"source_file"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["2663-337X"]},"publication_status":"published","degree_awarded":"PhD","month":"12","alternative_title":["ISTA Thesis"],"oa_version":"Published Version","abstract":[{"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.","lang":"eng"}],"title":"Rotation of coupled cold molecules in the presence of a many-body environment","author":[{"last_name":"Li","full_name":"Li, Xiang","first_name":"Xiang","id":"4B7E523C-F248-11E8-B48F-1D18A9856A87"}],"article_processing_charge":"No","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"ieee":"X. Li, “Rotation of coupled cold molecules in the presence of a many-body environment,” Institute of Science and Technology Austria, 2020.","short":"X. Li, Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment, Institute of Science and Technology Austria, 2020.","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","ama":"Li X. Rotation of coupled cold molecules in the presence of a many-body environment. 2020. doi:10.15479/AT:ISTA:8958","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.","ista":"Li X. 2020. Rotation of coupled cold molecules in the presence of a many-body environment. Institute of Science and Technology Austria.","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."},"project":[{"grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"grant_number":"801770","name":"Angulon: physics and applications of a new quasiparticle","call_identifier":"H2020","_id":"2688CF98-B435-11E9-9278-68D0E5697425"}],"date_published":"2020-12-21T00:00:00Z","doi":"10.15479/AT:ISTA:8958","date_created":"2020-12-21T09:44:30Z","page":"125","day":"21","has_accepted_license":"1","year":"2020","publisher":"Institute of Science and Technology Austria","oa":1},{"_id":"7956","type":"journal_article","article_type":"original","status":"public","date_updated":"2024-02-28T13:00:28Z","department":[{"_id":"MiLe"}],"abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","main_file_link":[{"url":"https://doi.org/10.1063/5.0005194","open_access":"1"}],"scopus_import":"1","intvolume":" 152","month":"05","publication_status":"published","publication_identifier":{"eissn":["10897690"]},"language":[{"iso":"eng"}],"ec_funded":1,"issue":"20","related_material":{"record":[{"status":"public","id":"10759","relation":"dissertation_contains"}]},"volume":152,"article_number":"204905","project":[{"name":"International IST Doctoral Program","grant_number":"665385","call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"}],"citation":{"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.","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.","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","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.","short":"J. Pȩkalski, W. Rzadkowski, A.Z. Panagiotopoulos, The Journal of Chemical Physics 152 (2020)."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","external_id":{"arxiv":["2002.07294"],"isi":["000537900300001"]},"author":[{"first_name":"J.","last_name":"Pȩkalski","full_name":"Pȩkalski, J."},{"last_name":"Rzadkowski","orcid":"0000-0002-1106-4419","full_name":"Rzadkowski, Wojciech","id":"48C55298-F248-11E8-B48F-1D18A9856A87","first_name":"Wojciech"},{"first_name":"A. Z.","last_name":"Panagiotopoulos","full_name":"Panagiotopoulos, A. Z."}],"title":"Shear-induced ordering in systems with competing interactions: A machine learning study","oa":1,"publisher":"AIP Publishing","quality_controlled":"1","year":"2020","isi":1,"publication":"The Journal of chemical physics","day":"29","date_created":"2020-06-14T22:00:49Z","date_published":"2020-05-29T00:00:00Z","doi":"10.1063/5.0005194"},{"publication":"Physical Review B","day":"13","year":"2020","isi":1,"date_created":"2020-02-02T23:01:01Z","doi":"10.1103/PhysRevB.101.020504","date_published":"2020-01-13T00:00:00Z","oa":1,"publisher":"American Physical Society","quality_controlled":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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","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","short":"A. Ghazaryan, P.L.S. Lopes, P. Hosur, M.J. Gilbert, P. Ghaemi, Physical Review B 101 (2020).","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."},"title":"Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors","external_id":{"isi":["000506843500001"],"arxiv":["1907.02077"]},"article_processing_charge":"No","author":[{"first_name":"Areg","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","last_name":"Ghazaryan","full_name":"Ghazaryan, Areg","orcid":"0000-0001-9666-3543"},{"last_name":"Lopes","full_name":"Lopes, P. L.S.","first_name":"P. L.S."},{"last_name":"Hosur","full_name":"Hosur, Pavan","first_name":"Pavan"},{"first_name":"Matthew J.","full_name":"Gilbert, Matthew J.","last_name":"Gilbert"},{"last_name":"Ghaemi","full_name":"Ghaemi, Pouyan","first_name":"Pouyan"}],"article_number":"020504","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"eissn":["24699969"],"issn":["24699950"]},"issue":"2","volume":101,"oa_version":"Preprint","abstract":[{"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.","lang":"eng"}],"intvolume":" 101","month":"01","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1907.02077"}],"scopus_import":"1","date_updated":"2024-02-28T13:11:13Z","department":[{"_id":"MiLe"}],"_id":"7428","status":"public","article_type":"original","type":"journal_article"},{"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.","oa":1,"publisher":"The Royal Society","quality_controlled":"1","publication":"Royal Society Open Science","day":"01","year":"2020","has_accepted_license":"1","isi":1,"date_created":"2020-11-08T23:01:25Z","doi":"10.1098/rsos.200599","date_published":"2020-06-01T00:00:00Z","article_number":"200599","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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","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","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.","short":"A.K. Klose, V. Karle, R. Winkelmann, J.F. Donges, Royal Society Open Science 7 (2020).","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."},"title":"Emergence of cascading dynamics in interacting tipping elements of ecology and climate: Cascading dynamics in tipping elements","article_processing_charge":"No","external_id":{"arxiv":["1910.12042"],"isi":["000545625200001"]},"author":[{"first_name":"Ann Kristin","full_name":"Klose, Ann Kristin","last_name":"Klose"},{"first_name":"Volker","id":"D7C012AE-D7ED-11E9-95E8-1EC5E5697425","last_name":"Karle","orcid":"0000-0002-6963-0129","full_name":"Karle, Volker"},{"last_name":"Winkelmann","full_name":"Winkelmann, Ricarda","first_name":"Ricarda"},{"first_name":"Jonathan F.","last_name":"Donges","full_name":"Donges, Jonathan F."}],"oa_version":"Published Version","abstract":[{"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.","lang":"eng"}],"intvolume":" 7","month":"06","scopus_import":"1","language":[{"iso":"eng"}],"file":[{"date_created":"2020-11-09T09:07:11Z","file_name":"2020_RoyalSocOpenScience_Klose.pdf","creator":"dernst","date_updated":"2020-11-09T09:07:11Z","file_size":1611485,"checksum":"5505c445de373bfd836eb4d3b48b1f37","file_id":"8748","success":1,"access_level":"open_access","relation":"main_file","content_type":"application/pdf"}],"publication_status":"published","publication_identifier":{"eissn":["20545703"]},"volume":7,"issue":"6","_id":"8741","status":"public","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_type":"original","type":"journal_article","ddc":["530","550"],"date_updated":"2024-03-12T12:31:30Z","department":[{"_id":"MiLe"}],"file_date_updated":"2020-11-09T09:07:11Z"},{"date_updated":"2023-08-30T06:57:53Z","department":[{"_id":"MiLe"}],"_id":"6940","status":"public","article_type":"original","type":"journal_article","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"related_material":{"link":[{"relation":"press_release","url":"https://ist.ac.at/en/news/new-form-of-magnetism-found/","description":"News auf IST Website"}]},"issue":"10","volume":123,"oa_version":"Preprint","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."}],"intvolume":" 123","month":"09","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1907.06253"}],"scopus_import":"1","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","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","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.","short":"G. Bighin, N. Defenu, I. Nándori, L. Salasnich, A. Trombettoni, Physical Review Letters 123 (2019).","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.","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.","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."},"title":"Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models","article_processing_charge":"No","external_id":{"isi":["000483587200004"],"arxiv":["1907.06253"]},"author":[{"first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","last_name":"Bighin","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777"},{"last_name":"Defenu","full_name":"Defenu, Nicolò","first_name":"Nicolò"},{"last_name":"Nándori","full_name":"Nándori, István","first_name":"István"},{"first_name":"Luca","last_name":"Salasnich","full_name":"Salasnich, Luca"},{"last_name":"Trombettoni","full_name":"Trombettoni, Andrea","first_name":"Andrea"}],"article_number":"100601","project":[{"call_identifier":"FWF","_id":"26986C82-B435-11E9-9278-68D0E5697425","name":"A path-integral approach to composite impurities","grant_number":"M02641"}],"publication":"Physical Review Letters","day":"06","year":"2019","isi":1,"date_created":"2019-10-14T06:31:13Z","doi":"10.1103/physrevlett.123.100601","date_published":"2019-09-06T00:00:00Z","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.","oa":1,"publisher":"American Physical Society","quality_controlled":"1"},{"_id":"6955","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_type":"original","type":"journal_article","status":"public","date_updated":"2023-08-30T07:06:42Z","ddc":["530"],"file_date_updated":"2020-07-14T12:47:46Z","department":[{"_id":"MiLe"}],"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."}],"oa_version":"Published Version","scopus_import":"1","intvolume":" 798","month":"11","publication_status":"published","publication_identifier":{"issn":["0370-2693"]},"language":[{"iso":"eng"}],"file":[{"checksum":"d27f983b34ea7dafdf356afbf9472fbf","file_id":"6974","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_name":"2019_PhysicsLettersB_Schmickler.pdf","date_created":"2019-10-25T12:47:04Z","file_size":528362,"date_updated":"2020-07-14T12:47:46Z","creator":"dernst"}],"volume":798,"article_number":"135016","citation":{"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.","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.","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","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.","short":"C.H. Schmickler, H.-W. Hammer, A. Volosniev, Physics Letters B 798 (2019)."},"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","external_id":{"isi":["000494939000086"],"arxiv":["1904.00913"]},"article_processing_charge":"No","author":[{"first_name":"C.H.","full_name":"Schmickler, C.H.","last_name":"Schmickler"},{"first_name":"H.-W.","last_name":"Hammer","full_name":"Hammer, H.-W."},{"first_name":"Artem","id":"37D278BC-F248-11E8-B48F-1D18A9856A87","last_name":"Volosniev","full_name":"Volosniev, Artem","orcid":"0000-0003-0393-5525"}],"title":"Universal physics of bound states of a few charged particles","oa":1,"publisher":"Elsevier","quality_controlled":"1","year":"2019","has_accepted_license":"1","isi":1,"publication":"Physics Letters B","day":"10","date_created":"2019-10-18T18:33:32Z","doi":"10.1016/j.physletb.2019.135016","date_published":"2019-11-10T00:00:00Z"},{"oa":1,"quality_controlled":"1","publisher":"Taylor and Francis","publication":"Molecular Physics","day":"18","year":"2019","isi":1,"has_accepted_license":"1","date_created":"2019-01-27T22:59:10Z","date_published":"2019-01-18T00:00:00Z","doi":"10.1080/00268976.2019.1567852","project":[{"call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902"},{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","citation":{"short":"X. Li, G. Bighin, E. Yakaboylu, M. Lemeshko, Molecular Physics (2019).","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.","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","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.","ista":"Li X, Bighin G, Yakaboylu E, Lemeshko M. 2019. Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics.","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."},"title":"Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon","external_id":{"isi":["000474641400008"]},"article_processing_charge":"No","author":[{"first_name":"Xiang","id":"4B7E523C-F248-11E8-B48F-1D18A9856A87","last_name":"Li","full_name":"Li, Xiang"},{"last_name":"Bighin","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","first_name":"Giacomo"},{"last_name":"Yakaboylu","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"}],"oa_version":"Published Version","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."}],"month":"01","scopus_import":"1","language":[{"iso":"eng"}],"file":[{"checksum":"178964744b636a6f036372f4f090a657","file_id":"5896","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_name":"2019_MolecularPhysics_Li.pdf","date_created":"2019-01-29T08:32:57Z","file_size":1309966,"date_updated":"2020-07-14T12:47:13Z","creator":"dernst"}],"publication_status":"published","publication_identifier":{"issn":["00268976"]},"ec_funded":1,"related_material":{"record":[{"status":"public","id":"8958","relation":"dissertation_contains"}]},"_id":"5886","status":"public","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"journal_article","ddc":["530"],"date_updated":"2023-09-07T13:16:42Z","file_date_updated":"2020-07-14T12:47:13Z","department":[{"_id":"MiLe"}]},{"language":[{"iso":"eng"}],"publication":"CLEO: Applications and Technology","day":"01","publication_status":"published","year":"2019","publication_identifier":{"isbn":["9781943580576"]},"date_created":"2019-07-17T09:40:44Z","date_published":"2019-05-01T00:00:00Z","doi":"10.1364/cleo_at.2019.jtu2a.52","oa_version":"None","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."}],"month":"05","scopus_import":"1","quality_controlled":"1","publisher":"Optica Publishing Group","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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","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","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.","short":"M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, V. Menon, in:, CLEO: Applications and Technology, Optica Publishing Group, 2019.","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."},"date_updated":"2023-10-17T12:14:29Z","department":[{"_id":"MiLe"}],"title":"Room temperature control of valley coherence in bilayer WS2 exciton polaritons","article_processing_charge":"No","author":[{"last_name":"Khatoniar","full_name":"Khatoniar, Mandeep","first_name":"Mandeep"},{"first_name":"Nicholas","last_name":"Yama","full_name":"Yama, Nicholas"},{"last_name":"Ghazaryan","orcid":"0000-0001-9666-3543","full_name":"Ghazaryan, Areg","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87","first_name":"Areg"},{"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"}],"article_number":"paper JTu2A.52","_id":"6646","status":"public","conference":{"name":"CLEO: Conference on Lasers and Electro-Optics","start_date":"2019-05-05","location":"San Jose, CA, United States","end_date":"2019-05-10"},"type":"conference"},{"quality_controlled":"1","publisher":"American Physical Society","oa":1,"date_published":"2019-12-16T00:00:00Z","doi":"10.1103/physrevresearch.1.033177","date_created":"2019-12-17T13:03:41Z","day":"16","publication":"Physical Review Research","has_accepted_license":"1","year":"2019","project":[{"call_identifier":"H2020","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411"}],"article_number":"033177","title":"In-medium bound states of two bosonic impurities in a one-dimensional Fermi gas","author":[{"full_name":"Huber, D.","last_name":"Huber","first_name":"D."},{"last_name":"Hammer","full_name":"Hammer, H.-W.","first_name":"H.-W."},{"id":"37D278BC-F248-11E8-B48F-1D18A9856A87","first_name":"Artem","last_name":"Volosniev","full_name":"Volosniev, Artem","orcid":"0000-0003-0393-5525"}],"article_processing_charge":"No","external_id":{"arxiv":["1908.02483"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","short":"D. Huber, H.-W. Hammer, A. Volosniev, Physical Review Research 1 (2019).","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","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","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.","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.","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."},"month":"12","intvolume":" 1","oa_version":"Published Version","abstract":[{"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.","lang":"eng"}],"volume":1,"issue":"3","ec_funded":1,"file":[{"checksum":"382eb67e62a77052a23887332d363f96","file_id":"7193","access_level":"open_access","relation":"main_file","content_type":"application/pdf","date_created":"2019-12-18T07:13:14Z","file_name":"2019_PhysRevResearch_Huber.pdf","creator":"dernst","date_updated":"2020-07-14T12:47:52Z","file_size":1370022}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","status":"public","type":"journal_article","article_type":"original","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"_id":"7190","file_date_updated":"2020-07-14T12:47:52Z","department":[{"_id":"MiLe"}],"ddc":["530"],"date_updated":"2024-02-28T13:11:40Z"},{"project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment"}],"article_number":"064428","article_processing_charge":"No","external_id":{"arxiv":["1802.01638"],"isi":["000459223400004"]},"author":[{"last_name":"Mentink","full_name":"Mentink, Johann H","first_name":"Johann H"},{"first_name":"Mikhail","last_name":"Katsnelson","full_name":"Katsnelson, Mikhail"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko"}],"title":"Quantum many-body dynamics of the Einstein-de Haas effect","citation":{"ista":"Mentink JH, Katsnelson M, Lemeshko M. 2019. Quantum many-body dynamics of the Einstein-de Haas effect. Physical Review B. 99(6), 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.","short":"J.H. Mentink, M. Katsnelson, M. Lemeshko, Physical Review B 99 (2019).","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","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"quality_controlled":"1","publisher":"American Physical Society","date_created":"2019-03-10T22:59:20Z","doi":"10.1103/PhysRevB.99.064428","date_published":"2019-02-01T00:00:00Z","year":"2019","isi":1,"publication":"Physical Review B","day":"01","type":"journal_article","status":"public","_id":"6092","department":[{"_id":"MiLe"}],"date_updated":"2024-02-28T13:11:54Z","main_file_link":[{"url":"https://arxiv.org/abs/1802.01638","open_access":"1"}],"scopus_import":"1","intvolume":" 99","month":"02","abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","issue":"6","volume":99,"publication_status":"published","language":[{"iso":"eng"}]},{"oa":1,"quality_controlled":"1","publisher":"American Physical Society","date_created":"2019-08-11T21:59:20Z","date_published":"2019-05-08T00:00:00Z","doi":"10.1103/PhysRevX.9.021026","year":"2019","has_accepted_license":"1","isi":1,"publication":"Physical Review X","day":"08","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"}],"article_number":"021026","article_processing_charge":"No","external_id":{"isi":["000467402900001"],"arxiv":["1807.11238"]},"author":[{"first_name":"Colin","last_name":"Hubert","full_name":"Hubert, Colin"},{"first_name":"Yifat","last_name":"Baruchi","full_name":"Baruchi, Yifat"},{"first_name":"Yotam","last_name":"Mazuz-Harpaz","full_name":"Mazuz-Harpaz, Yotam"},{"first_name":"Kobi","last_name":"Cohen","full_name":"Cohen, Kobi"},{"first_name":"Klaus","full_name":"Biermann, Klaus","last_name":"Biermann"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"},{"full_name":"West, Ken","last_name":"West","first_name":"Ken"},{"full_name":"Pfeiffer, Loren","last_name":"Pfeiffer","first_name":"Loren"},{"full_name":"Rapaport, Ronen","last_name":"Rapaport","first_name":"Ronen"},{"last_name":"Santos","full_name":"Santos, Paulo","first_name":"Paulo"}],"title":"Attractive dipolar coupling between stacked exciton fluids","citation":{"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.","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.","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","ieee":"C. Hubert et al., “Attractive dipolar coupling between stacked exciton fluids,” Physical Review X, vol. 9, no. 2. American Physical Society, 2019.","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).","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","scopus_import":"1","intvolume":" 9","month":"05","abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","volume":9,"issue":"2","publication_status":"published","publication_identifier":{"eissn":["2160-3308"]},"language":[{"iso":"eng"}],"file":[{"file_name":"2019_PhysReviewX_Hubert.pdf","date_created":"2019-08-12T12:14:18Z","creator":"dernst","file_size":1193550,"date_updated":"2020-07-14T12:47:40Z","file_id":"6802","checksum":"065ff82ee4a1d2c3773ce4b76ff4213c","relation":"main_file","access_level":"open_access","content_type":"application/pdf"}],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_type":"original","type":"journal_article","status":"public","_id":"6786","department":[{"_id":"MiLe"}],"file_date_updated":"2020-07-14T12:47:40Z","date_updated":"2024-02-28T13:12:48Z","ddc":["530"]},{"issue":"6","volume":99,"language":[{"iso":"eng"}],"publication_identifier":{"eissn":["24699934"],"issn":["24699926"]},"publication_status":"published","month":"06","intvolume":" 99","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1903.06759","open_access":"1"}],"oa_version":"Preprint","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."}],"department":[{"_id":"MiLe"}],"date_updated":"2024-02-28T13:12:34Z","status":"public","type":"journal_article","_id":"6632","date_published":"2019-06-28T00:00:00Z","doi":"10.1103/PhysRevA.99.063627","date_created":"2019-07-14T21:59:17Z","day":"28","publication":"Physical Review A","isi":1,"year":"2019","publisher":"American Physical Society","quality_controlled":"1","oa":1,"title":"Coupled superfluidity of binary Bose mixtures in two dimensions","author":[{"full_name":"Karle, Volker","last_name":"Karle","first_name":"Volker"},{"first_name":"Nicolò","full_name":"Defenu, Nicolò","last_name":"Defenu"},{"first_name":"Tilman","full_name":"Enss, Tilman","last_name":"Enss"}],"external_id":{"arxiv":["1903.06759"],"isi":["000473133600007"]},"article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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).","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.","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.","ista":"Karle V, Defenu N, Enss T. 2019. Coupled superfluidity of binary Bose mixtures in two dimensions. Physical Review A. 99(6), 063627."},"article_number":"063627"},{"citation":{"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.","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.","short":"C.P. Koch, M. Lemeshko, D. Sugny, Reviews of Modern Physics 91 (2019).","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","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","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.","ista":"Koch CP, Lemeshko M, Sugny D. 2019. Quantum control of molecular rotation. Reviews of Modern Physics. 91(3), 035005."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","external_id":{"arxiv":["1810.11338"],"isi":["000486661700001"]},"author":[{"first_name":"Christiane P.","full_name":"Koch, Christiane P.","last_name":"Koch"},{"last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"},{"first_name":"Dominique","last_name":"Sugny","full_name":"Sugny, Dominique"}],"title":"Quantum control of molecular rotation","article_number":"035005 ","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"}],"year":"2019","isi":1,"publication":"Reviews of Modern Physics","day":"18","date_created":"2020-01-29T16:04:19Z","date_published":"2019-09-18T00:00:00Z","doi":"10.1103/revmodphys.91.035005","oa":1,"publisher":"American Physical Society","quality_controlled":"1","date_updated":"2024-02-28T13:15:33Z","department":[{"_id":"MiLe"}],"_id":"7396","article_type":"original","type":"journal_article","status":"public","publication_status":"published","publication_identifier":{"issn":["0034-6861"],"eissn":["1539-0756"]},"language":[{"iso":"eng"}],"issue":"3","volume":91,"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."}],"oa_version":"Preprint","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1810.11338"}],"scopus_import":"1","intvolume":" 91","month":"09"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1712.00308"}],"scopus_import":"1","intvolume":" 98","month":"07","abstract":[{"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.","lang":"eng"}],"oa_version":"Submitted Version","ec_funded":1,"issue":"4","volume":98,"publication_status":"published","language":[{"iso":"eng"}],"type":"journal_article","status":"public","_id":"195","department":[{"_id":"MiLe"}],"date_updated":"2023-09-08T13:22:57Z","oa":1,"publisher":"American Physical Society","quality_controlled":"1","date_created":"2018-12-11T11:45:08Z","date_published":"2018-07-15T00:00:00Z","doi":"10.1103/PhysRevB.98.045402","year":"2018","isi":1,"publication":"Physical Review B - Condensed Matter and Materials Physics","day":"15","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"},{"call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902"}],"article_number":"045402","article_processing_charge":"No","external_id":{"arxiv":["1712.00308"],"isi":["000436939100007"]},"author":[{"last_name":"Yakaboylu","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","first_name":"Enderalp"},{"last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"title":"Anyonic statistics of quantum impurities in two dimensions","citation":{"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).","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.","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1"},{"_id":"427","article_type":"original","type":"journal_article","status":"public","date_updated":"2023-09-15T12:09:35Z","department":[{"_id":"MiLe"}],"abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1802.07920","open_access":"1"}],"month":"02","intvolume":" 97","publication_status":"published","language":[{"iso":"eng"}],"issue":"2","volume":97,"ec_funded":1,"article_number":"022510","project":[{"call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"citation":{"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.","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","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","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.","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).","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","author":[{"first_name":"Pedro","last_name":"Amaro","full_name":"Amaro, Pedro"},{"last_name":"Loureiro","full_name":"Loureiro, Ulisses","first_name":"Ulisses"},{"first_name":"Laleh","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","full_name":"Safari, Laleh","last_name":"Safari"},{"last_name":"Fratini","full_name":"Fratini, Filippo","first_name":"Filippo"},{"last_name":"Indelicato","full_name":"Indelicato, Paul","first_name":"Paul"},{"first_name":"Thomas","last_name":"Stöhlker","full_name":"Stöhlker, Thomas"},{"first_name":"José","last_name":"Santos","full_name":"Santos, José"}],"publist_id":"7396","external_id":{"arxiv":["1802.07920"],"isi":["000425601000004"]},"article_processing_charge":"No","title":"Quantum interference in laser spectroscopy of highly charged lithiumlike ions","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","publisher":"American Physical Society","quality_controlled":"1","oa":1,"isi":1,"year":"2018","day":"21","publication":" Physical Review A - Atomic, Molecular, and Optical Physics","date_published":"2018-02-21T00:00:00Z","doi":"10.1103/PhysRevA.97.022510","date_created":"2018-12-11T11:46:25Z"},{"article_processing_charge":"No","external_id":{"isi":["000454178600009"],"arxiv":["1809.00222"]},"author":[{"first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","last_name":"Yakaboylu","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874"},{"last_name":"Shkolnikov","orcid":"0000-0002-4310-178X","full_name":"Shkolnikov, Mikhail","first_name":"Mikhail","id":"35084A62-F248-11E8-B48F-1D18A9856A87"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"}],"title":"Quantum groups as hidden symmetries of quantum impurities","citation":{"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).","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.","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","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","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.","ista":"Yakaboylu E, Shkolnikov M, Lemeshko M. 2018. Quantum groups as hidden symmetries of quantum impurities. Physical Review Letters. 121(25), 255302."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment"}],"article_number":"255302","date_created":"2019-01-06T22:59:12Z","doi":"10.1103/PhysRevLett.121.255302","date_published":"2018-12-17T00:00:00Z","year":"2018","isi":1,"publication":"Physical Review Letters","day":"17","oa":1,"publisher":"American Physical Society","quality_controlled":"1","department":[{"_id":"MiLe"}],"date_updated":"2023-09-15T12:09:06Z","article_type":"original","type":"journal_article","status":"public","_id":"5794","ec_funded":1,"volume":121,"issue":"25","publication_status":"published","publication_identifier":{"issn":["00319007"]},"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1809.00222"}],"scopus_import":"1","intvolume":" 121","month":"12","abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint"},{"_id":"420","type":"journal_article","status":"public","date_updated":"2023-09-18T08:09:59Z","department":[{"_id":"MiLe"}],"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."}],"oa_version":"Preprint","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1710.11171"}],"month":"07","intvolume":" 32","publication_status":"published","language":[{"iso":"eng"}],"volume":32,"issue":"17","citation":{"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.","short":"G. Bighin, L. Salasnich, International Journal of Modern Physics B 32 (2018) 1840022.","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","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","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.","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","author":[{"last_name":"Bighin","orcid":"0000-0001-8823-9777","full_name":"Bighin, Giacomo","first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Salasnich","full_name":"Salasnich, Luca","first_name":"Luca"}],"publist_id":"7402","external_id":{"isi":["000438217300007"]},"article_processing_charge":"No","title":"Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover","publisher":"World Scientific Publishing","quality_controlled":"1","oa":1,"isi":1,"year":"2018","day":"10","publication":"International Journal of Modern Physics B","page":"1840022","date_published":"2018-07-10T00:00:00Z","doi":"10.1142/S0217979218400222","date_created":"2018-12-11T11:46:22Z"},{"volume":97,"issue":"4","ec_funded":1,"publication_status":"published","language":[{"iso":"eng"}],"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1801.06892"}],"month":"04","intvolume":" 97","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."}],"oa_version":"Submitted Version","department":[{"_id":"MiLe"}],"date_updated":"2023-09-19T10:17:56Z","type":"journal_article","status":"public","_id":"294","doi":"10.1103/PhysRevA.97.043842","date_published":"2018-04-18T00:00:00Z","date_created":"2018-12-11T11:45:40Z","isi":1,"year":"2018","day":"18","publication":"Physical Review A - Atomic, Molecular, and Optical Physics","quality_controlled":"1","publisher":"American Physical Society","oa":1,"author":[{"first_name":"Filippo","last_name":"Fratini","full_name":"Fratini, Filippo"},{"first_name":"Laleh","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","last_name":"Safari","full_name":"Safari, Laleh"},{"first_name":"Pedro","full_name":"Amaro, Pedro","last_name":"Amaro"},{"first_name":"José","last_name":"Santos","full_name":"Santos, José"}],"publist_id":"7587","article_processing_charge":"No","external_id":{"isi":["000430296800008"],"arxiv":["1801.06892"]},"title":"Two-photon processes based on quantum commutators","citation":{"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.","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","short":"F. Fratini, L. Safari, P. Amaro, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018).","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.","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.","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)."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}]},{"_id":"5983","status":"public","type":"journal_article","date_updated":"2023-09-19T14:29:03Z","department":[{"_id":"MiLe"},{"_id":"RoSe"}],"oa_version":"Preprint","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."}],"month":"12","intvolume":" 98","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1809.01204"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"publication_status":"published","issue":"22","volume":98,"ec_funded":1,"article_number":"224506","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"},{"grant_number":"694227","name":"Analysis of quantum many-body systems","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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.","short":"E. Yakaboylu, B. Midya, A. Deuchert, N.K. Leopold, M. Lemeshko, Physical Review B 98 (2018).","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","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","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.","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.","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."},"title":"Theory of the rotating polaron: Spectrum and self-localization","author":[{"last_name":"Yakaboylu","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","first_name":"Enderalp"},{"full_name":"Midya, Bikashkali","last_name":"Midya","id":"456187FC-F248-11E8-B48F-1D18A9856A87","first_name":"Bikashkali"},{"last_name":"Deuchert","orcid":"0000-0003-3146-6746","full_name":"Deuchert, Andreas","first_name":"Andreas","id":"4DA65CD0-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Nikolai K","id":"4BC40BEC-F248-11E8-B48F-1D18A9856A87","last_name":"Leopold","full_name":"Leopold, Nikolai K","orcid":"0000-0002-0495-6822"},{"last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"external_id":{"isi":["000452992700008"],"arxiv":["1809.01204"]},"article_processing_charge":"No","publisher":"American Physical Society","quality_controlled":"1","oa":1,"day":"12","publication":"Physical Review B","isi":1,"year":"2018","date_published":"2018-12-12T00:00:00Z","doi":"10.1103/physrevb.98.224506","date_created":"2019-02-14T10:37:09Z"},{"ec_funded":1,"issue":"3","volume":43,"language":[{"iso":"eng"}],"publication_status":"published","intvolume":" 43","month":"02","main_file_link":[{"url":"https://arxiv.org/abs/1711.01986","open_access":"1"}],"scopus_import":"1","oa_version":"Preprint","abstract":[{"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.","lang":"eng"}],"department":[{"_id":"MiLe"}],"date_updated":"2023-10-17T12:15:06Z","status":"public","type":"journal_article","_id":"435","date_created":"2018-12-11T11:46:27Z","doi":"10.1364/OL.43.000607","date_published":"2018-02-01T00:00:00Z","page":"607 - 610","publication":"Optics Letters","day":"01","year":"2018","isi":1,"oa":1,"publisher":"Optica Publishing Group","quality_controlled":"1","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.","title":"Coherent-perfect-absorber and laser for bound states in a continuum","external_id":{"isi":["000423776600066"],"arxiv":["1711.01986"]},"article_processing_charge":"No","publist_id":"7388","author":[{"last_name":"Midya","full_name":"Midya, Bikashkali","id":"456187FC-F248-11E8-B48F-1D18A9856A87","first_name":"Bikashkali"},{"last_name":"Konotop","full_name":"Konotop, Vladimir","first_name":"Vladimir"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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","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","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.","ista":"Midya B, Konotop V. 2018. Coherent-perfect-absorber and laser for bound states in a continuum. Optics Letters. 43(3), 607–610."},"project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}]},{"date_updated":"2024-02-28T13:01:59Z","department":[{"_id":"MiLe"}],"_id":"415","article_type":"original","type":"journal_article","status":"public","publication_status":"published","language":[{"iso":"eng"}],"related_material":{"record":[{"relation":"dissertation_contains","id":"10759","status":"public"}]},"volume":148,"issue":"10","ec_funded":1,"abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1711.09904","open_access":"1"}],"month":"03","intvolume":" 148","citation":{"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).","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.","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","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","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.","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"orcid":"0000-0002-1106-4419","full_name":"Rzadkowski, Wojciech","last_name":"Rzadkowski","first_name":"Wojciech","id":"48C55298-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"}],"publist_id":"7408","external_id":{"isi":["000427517200065"],"arxiv":["1711.09904"]},"article_processing_charge":"No","title":"Effect of a magnetic field on molecule–solvent angular momentum transfer","article_number":"104307","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"},{"_id":"2564DBCA-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"665385","name":"International IST Doctoral Program"}],"isi":1,"year":"2018","day":"14","publication":"The Journal of Chemical Physics","date_published":"2018-03-14T00:00:00Z","doi":"10.1063/1.5017591","date_created":"2018-12-11T11:46:21Z","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","quality_controlled":"1","publisher":"AIP Publishing","oa":1},{"intvolume":" 121","month":"10","main_file_link":[{"url":"https://arxiv.org/abs/1803.07990","open_access":"1"}],"scopus_import":"1","oa_version":"Preprint","abstract":[{"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.","lang":"eng"}],"volume":121,"related_material":{"link":[{"description":"News on IST Homepage","url":"https://ist.ac.at/en/news/description-of-rotating-molecules-made-easy/","relation":"press_release"}]},"issue":"16","language":[{"iso":"eng"}],"publication_status":"published","status":"public","type":"journal_article","_id":"6339","department":[{"_id":"MiLe"}],"date_updated":"2024-02-28T13:15:09Z","oa":1,"publisher":"American Physical Society","quality_controlled":"1","date_created":"2019-04-17T10:53:38Z","doi":"10.1103/physrevlett.121.165301","date_published":"2018-10-16T00:00:00Z","publication":"Physical Review Letters","day":"16","year":"2018","isi":1,"project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902"}],"article_number":"165301","title":"Diagrammatic Monte Carlo approach to angular momentum in quantum many-particle systems","article_processing_charge":"No","external_id":{"isi":["000447468400008"],"arxiv":["1803.07990"]},"author":[{"first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","last_name":"Bighin"},{"full_name":"Tscherbul, Timur","last_name":"Tscherbul","first_name":"Timur"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","short":"G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018).","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","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","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."}},{"oa_version":"Preprint","abstract":[{"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. ","lang":"eng"}],"intvolume":" 121","month":"10","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1803.07990"}],"scopus_import":"1","language":[{"iso":"eng"}],"publication_status":"published","volume":121,"issue":"16","_id":"417","status":"public","type":"journal_article","date_updated":"2024-02-28T13:14:53Z","department":[{"_id":"MiLe"}],"oa":1,"quality_controlled":"1","publisher":"American Physical Society","publication":"Physical Review Letters","day":"16","year":"2018","date_created":"2018-12-11T11:46:22Z","doi":"10.1103/PhysRevLett.121.165301","date_published":"2018-10-16T00:00:00Z","article_number":"165301","project":[{"call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach to rotating molecular impurities. Physical Review Letters. 121(16), 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.","short":"G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018).","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.","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","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","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."},"title":"Diagrammatic Monte Carlo approach to rotating molecular impurities","external_id":{"arxiv":["1803.07990"]},"article_processing_charge":"No","publist_id":"8025","author":[{"first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","full_name":"Bighin, Giacomo","orcid":"0000-0001-8823-9777","last_name":"Bighin"},{"full_name":"Tscherbul, Timur","last_name":"Tscherbul","first_name":"Timur"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"}]},{"volume":999,"related_material":{"record":[{"status":"public","id":"6013","relation":"later_version"}]},"issue":"1","language":[{"iso":"eng"}],"file":[{"file_id":"5871","checksum":"6e70b525a84f6d5fb175c48e9f5cb59a","access_level":"open_access","relation":"main_file","content_type":"application/pdf","date_created":"2019-01-22T08:34:10Z","file_name":"2017_Physics_Camus.pdf","creator":"dernst","date_updated":"2020-07-14T12:46:00Z","file_size":949321}],"publication_status":"published","publication_identifier":{"issn":["17426588"]},"intvolume":" 999","month":"07","alternative_title":["Journal of Physics: Conference Series"],"scopus_import":1,"oa_version":"Published Version","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."}],"file_date_updated":"2020-07-14T12:46:00Z","department":[{"_id":"MiLe"}],"ddc":["530"],"date_updated":"2023-02-23T12:36:07Z","status":"public","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"conference":{"location":"Kazan, Russian Federation","end_date":"2017-08-21","start_date":"2017-08-17","name":"Annual International Laser Physics Workshop LPHYS"},"type":"conference","_id":"313","date_created":"2018-12-11T11:45:46Z","doi":"10.1088/1742-6596/999/1/012004","date_published":"2017-07-14T00:00:00Z","day":"14","year":"2017","has_accepted_license":"1","oa":1,"quality_controlled":"1","publisher":"American Physical Society","title":"Experimental evidence for Wigner's tunneling time","external_id":{"arxiv":["1611.03701"]},"publist_id":"7552","author":[{"first_name":"Nicolas","full_name":"Camus, Nicolas","last_name":"Camus"},{"last_name":"Yakaboylu","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874","first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fechner","full_name":"Fechner, Lutz","first_name":"Lutz"},{"last_name":"Klaiber","full_name":"Klaiber, Michael","first_name":"Michael"},{"first_name":"Martin","full_name":"Laux, Martin","last_name":"Laux"},{"first_name":"Yonghao","last_name":"Mi","full_name":"Mi, Yonghao"},{"first_name":"Karen","last_name":"Hatsagortsyan","full_name":"Hatsagortsyan, Karen"},{"first_name":"Thomas","full_name":"Pfeifer, Thomas","last_name":"Pfeifer"},{"full_name":"Keitel, Cristoph","last_name":"Keitel","first_name":"Cristoph"},{"full_name":"Moshammer, Robert","last_name":"Moshammer","first_name":"Robert"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"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","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","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.","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.","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.","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.","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."},"article_number":"012004"},{"abstract":[{"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.”","lang":"eng"}],"oa_version":"Preprint","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1611.03701"}],"scopus_import":1,"intvolume":" 119","month":"07","publication_status":"published","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"language":[{"iso":"eng"}],"volume":119,"issue":"2","related_material":{"record":[{"relation":"earlier_version","id":"313","status":"public"}]},"_id":"6013","type":"journal_article","status":"public","date_updated":"2023-02-23T11:13:36Z","department":[{"_id":"MiLe"}],"oa":1,"publisher":"American Physical Society","quality_controlled":"1","year":"2017","publication":"Physical Review Letters","day":"14","date_created":"2019-02-14T15:24:13Z","doi":"10.1103/PhysRevLett.119.023201","date_published":"2017-07-14T00:00:00Z","article_number":"023201","citation":{"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.","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.","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).","ieee":"N. Camus et al., “Experimental evidence for quantum tunneling time,” Physical Review Letters, vol. 119, no. 2. American Physical Society, 2017.","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","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","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["1611.03701"]},"author":[{"first_name":"Nicolas","full_name":"Camus, Nicolas","last_name":"Camus"},{"first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","last_name":"Yakaboylu"},{"first_name":"Lutz","full_name":"Fechner, Lutz","last_name":"Fechner"},{"first_name":"Michael","last_name":"Klaiber","full_name":"Klaiber, Michael"},{"first_name":"Martin","full_name":"Laux, Martin","last_name":"Laux"},{"first_name":"Yonghao","full_name":"Mi, Yonghao","last_name":"Mi"},{"first_name":"Karen Z.","last_name":"Hatsagortsyan","full_name":"Hatsagortsyan, Karen Z."},{"first_name":"Thomas","last_name":"Pfeifer","full_name":"Pfeifer, Thomas"},{"first_name":"Christoph H.","last_name":"Keitel","full_name":"Keitel, Christoph H."},{"last_name":"Moshammer","full_name":"Moshammer, Robert","first_name":"Robert"}],"title":"Experimental evidence for quantum tunneling time"},{"year":"2017","publication":"Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero ","day":"14","page":"444 - 495","date_created":"2018-12-11T11:47:27Z","date_published":"2017-12-14T00:00:00Z","doi":"10.1039/9781782626800-00444","oa":1,"publisher":"The Royal Society of Chemistry","quality_controlled":"1","citation":{"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.","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.","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.","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","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"},"user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","publist_id":"7201","author":[{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Schmidt, Richard","last_name":"Schmidt","first_name":"Richard"}],"editor":[{"last_name":"Dulieu","full_name":"Dulieu, Oliver","first_name":"Oliver"},{"first_name":"Andreas","full_name":"Osterwalder, Andreas","last_name":"Osterwalder"}],"title":"Molecular impurities interacting with a many-particle environment: From ultracold gases to helium nanodroplets","publication_status":"published","publication_identifier":{"issn":["20413181"]},"language":[{"iso":"eng"}],"volume":11,"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."}],"oa_version":"Submitted Version","main_file_link":[{"url":"https://arxiv.org/abs/1703.06753","open_access":"1"}],"alternative_title":["Theoretical and Computational Chemistry Series"],"scopus_import":1,"intvolume":" 11","month":"12","date_updated":"2021-01-12T08:05:50Z","department":[{"_id":"MiLe"}],"_id":"604","series_title":"Theoretical and Computational Chemistry Series","type":"book_chapter","status":"public"},{"department":[{"_id":"MiLe"}],"date_updated":"2023-09-20T11:25:56Z","status":"public","type":"journal_article","_id":"1162","volume":95,"issue":"2","ec_funded":1,"language":[{"iso":"eng"}],"publication_identifier":{"issn":["24699950"]},"publication_status":"published","month":"01","intvolume":" 95","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1606.03247"}],"oa_version":"Submitted Version","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."}],"title":"Universal properties of high temperature superconductors from real space pairing t-J-U model and its quantitative comparison with experiment","author":[{"last_name":"Spałek","full_name":"Spałek, Jozef","first_name":"Jozef"},{"first_name":"Michał","full_name":"Zegrodnik, Michał","last_name":"Zegrodnik"},{"orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","last_name":"Kaczmarczyk","first_name":"Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"}],"publist_id":"6195","article_processing_charge":"No","external_id":{"isi":["000391852800006"]},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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.","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).","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.","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","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"},"project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"024506","date_published":"2017-01-13T00:00:00Z","doi":"10.1103/PhysRevB.95.024506","date_created":"2018-12-11T11:50:29Z","day":"13","publication":"Physical Review B - Condensed Matter and Materials Physics","isi":1,"year":"2017","quality_controlled":"1","publisher":"American Physical Society","oa":1},{"year":"2017","isi":1,"publication":"Journal of Physics: Condensed Matter","day":"16","date_created":"2018-12-11T11:50:29Z","date_published":"2017-01-16T00:00:00Z","doi":"10.1088/1361-648X/aa532f","quality_controlled":"1","publisher":"IOP Publishing Ltd.","citation":{"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.","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","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","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.","short":"M. Wysokiński, J. Kaczmarczyk, Journal of Physics: Condensed Matter 29 (2017).","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","article_processing_charge":"No","external_id":{"isi":["000393955500001"]},"publist_id":"6194","author":[{"first_name":"Marcin","last_name":"Wysokiński","full_name":"Wysokiński, Marcin"},{"first_name":"Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","last_name":"Kaczmarczyk","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675"}],"title":"Unconventional superconductivity in generalized Hubbard model role of electron–hole symmetry breaking terms","article_number":"085604","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"publication_status":"published","publication_identifier":{"issn":["09538984"]},"language":[{"iso":"eng"}],"ec_funded":1,"volume":29,"issue":"8","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."}],"oa_version":"None","scopus_import":"1","intvolume":" 29","month":"01","date_updated":"2023-09-20T11:25:32Z","department":[{"_id":"MiLe"}],"_id":"1163","type":"journal_article","status":"public"},{"date_published":"2017-03-06T00:00:00Z","doi":"10.1103/PhysRevA.95.033608","date_created":"2018-12-11T11:50:15Z","day":"06","publication":"Physical Review A","isi":1,"year":"2017","publisher":"American Physical Society","quality_controlled":"1","oa":1,"title":"Angular self-localization of impurities rotating in a bosonic bath","publist_id":"6242","author":[{"id":"4B7E523C-F248-11E8-B48F-1D18A9856A87","first_name":"Xiang","last_name":"Li","full_name":"Li, Xiang"},{"id":"4AFD0470-F248-11E8-B48F-1D18A9856A87","first_name":"Robert","last_name":"Seiringer","full_name":"Seiringer, Robert","orcid":"0000-0002-6781-0521"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"}],"article_processing_charge":"No","external_id":{"isi":["000395981900009"]},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"ista":"Li X, Seiringer R, Lemeshko M. 2017. Angular self-localization of impurities rotating in a bosonic bath. Physical Review A. 95(3), 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.","short":"X. Li, R. Seiringer, M. Lemeshko, Physical Review A 95 (2017).","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.","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","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","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."},"project":[{"grant_number":"694227","name":"Analysis of quantum many-body systems","call_identifier":"H2020","_id":"25C6DC12-B435-11E9-9278-68D0E5697425"},{"name":"Structure of the Excitation Spectrum for Many-Body Quantum Systems","grant_number":"P27533_N27","_id":"25C878CE-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment"}],"article_number":"033608","issue":"3","related_material":{"record":[{"status":"public","id":"8958","relation":"dissertation_contains"}]},"volume":95,"ec_funded":1,"language":[{"iso":"eng"}],"publication_identifier":{"issn":["24699926"]},"publication_status":"published","month":"03","intvolume":" 95","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1610.04908","open_access":"1"}],"oa_version":"Published Version","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. "}],"department":[{"_id":"MiLe"},{"_id":"RoSe"}],"date_updated":"2023-09-20T11:30:58Z","status":"public","type":"journal_article","_id":"1120"},{"ec_funded":1,"issue":"8","volume":118,"publication_status":"published","publication_identifier":{"issn":["00319007"]},"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1612.02820"}],"scopus_import":"1","intvolume":" 118","month":"02","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."}],"oa_version":"Submitted Version","department":[{"_id":"MiLe"}],"date_updated":"2023-09-20T11:30:08Z","type":"journal_article","status":"public","_id":"1133","date_created":"2018-12-11T11:50:19Z","date_published":"2017-02-22T00:00:00Z","doi":"10.1103/PhysRevLett.118.085302","year":"2017","isi":1,"publication":"Physical Review Letters","day":"22","oa":1,"quality_controlled":"1","publisher":"American Physical Society","article_processing_charge":"No","external_id":{"isi":["000394667600003"]},"publist_id":"6225","author":[{"id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","first_name":"Enderalp","last_name":"Yakaboylu","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko"}],"title":"Anomalous screening of quantum impurities by a neutral environment","citation":{"short":"E. Yakaboylu, M. Lemeshko, Physical Review Letters 118 (2017).","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.","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","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","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.","ista":"Yakaboylu E, Lemeshko M. 2017. Anomalous screening of quantum impurities by a neutral environment. Physical Review Letters. 118(8), 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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","project":[{"call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"},{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425"}],"article_number":"085302"},{"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["00319007"]},"volume":118,"issue":"9","oa_version":"Submitted Version","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."}],"intvolume":" 118","month":"02","main_file_link":[{"url":"https://arxiv.org/abs/1610.01604","open_access":"1"}],"date_updated":"2023-09-20T11:31:22Z","department":[{"_id":"MiLe"}],"_id":"1119","status":"public","type":"journal_article","publication":"Physical Review Letters","day":"27","year":"2017","isi":1,"date_created":"2018-12-11T11:50:15Z","date_published":"2017-02-27T00:00:00Z","doi":"10.1103/PhysRevLett.118.095301","oa":1,"quality_controlled":"1","publisher":"American Physical Society","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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","ama":"Lemeshko M. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 2017;118(9). doi:10.1103/PhysRevLett.118.095301","short":"M. Lemeshko, Physical Review Letters 118 (2017).","ieee":"M. Lemeshko, “Quasiparticle approach to molecules interacting with quantum solvents,” Physical Review Letters, vol. 118, no. 9. American Physical Society, 2017.","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.","ista":"Lemeshko M. 2017. Quasiparticle approach to molecules interacting with quantum solvents. Physical Review Letters. 118(9), 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."},"title":"Quasiparticle approach to molecules interacting with quantum solvents","article_processing_charge":"No","external_id":{"isi":["000404769200006"]},"author":[{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko"}],"publist_id":"6243","article_number":"095301","project":[{"name":"ROOTS Genome-wide Analysis of Root Traits","grant_number":"11-NSF-1070","_id":"25636330-B435-11E9-9278-68D0E5697425"}]},{"year":"2017","isi":1,"publication":"Physical Review Letters","day":"19","date_created":"2018-12-11T11:50:12Z","doi":"10.1103/PhysRevLett.118.203203","date_published":"2017-05-19T00:00:00Z","oa":1,"quality_controlled":"1","publisher":"American Physical Society","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","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.","short":"B. Shepperson, A. Søndergaard, L. Christiansen, J. Kaczmarczyk, R. Zillich, M. Lemeshko, H. Stapelfeldt, Physical Review Letters 118 (2017).","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.","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","external_id":{"isi":["000401664000005"]},"article_processing_charge":"No","author":[{"first_name":"Benjamin","last_name":"Shepperson","full_name":"Shepperson, Benjamin"},{"last_name":"Søndergaard","full_name":"Søndergaard, Anders","first_name":"Anders"},{"last_name":"Christiansen","full_name":"Christiansen, Lars","first_name":"Lars"},{"last_name":"Kaczmarczyk","orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan"},{"first_name":"Robert","last_name":"Zillich","full_name":"Zillich, Robert"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"},{"full_name":"Stapelfeldt, Henrik","last_name":"Stapelfeldt","first_name":"Henrik"}],"publist_id":"6260","title":"Laser-induced rotation of iodine molecules in helium nanodroplets: Revivals and breaking-free","article_number":"203203","project":[{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"publication_status":"published","language":[{"iso":"eng"}],"volume":118,"issue":"20","abstract":[{"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. ","lang":"eng"}],"oa_version":"Preprint","main_file_link":[{"url":"https://arxiv.org/abs/1702.01977","open_access":"1"}],"scopus_import":"1","intvolume":" 118","month":"05","date_updated":"2023-09-20T11:36:17Z","department":[{"_id":"MiLe"}],"_id":"1109","type":"journal_article","status":"public"},{"date_created":"2018-12-11T11:50:01Z","doi":"10.1103/PhysRevA.95.023403","date_published":"2017-02-01T00:00:00Z","publication":" Physical Review A - Atomic, Molecular, and Optical Physics","day":"01","year":"2017","isi":1,"oa":1,"quality_controlled":"1","publisher":"American Physical Society","title":"Strong-field ionization via a high-order Coulomb-corrected strong-field approximation","external_id":{"isi":["000400571700011"]},"article_processing_charge":"No","author":[{"first_name":"Michael","last_name":"Klaiber","full_name":"Klaiber, Michael"},{"first_name":"Jiří","full_name":"Daněk, Jiří","last_name":"Daněk"},{"first_name":"Enderalp","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","last_name":"Yakaboylu"},{"full_name":"Hatsagortsyan, Karen","last_name":"Hatsagortsyan","first_name":"Karen"},{"full_name":"Keitel, Christoph","last_name":"Keitel","first_name":"Christoph"}],"publist_id":"6305","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"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.","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.","short":"M. Klaiber, J. Daněk, E. Yakaboylu, K. Hatsagortsyan, C. Keitel, Physical Review A - Atomic, Molecular, and Optical Physics 95 (2017).","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.","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."},"project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"023403","ec_funded":1,"issue":"2","volume":95,"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["24699926"]},"intvolume":" 95","month":"02","main_file_link":[{"url":"https://arxiv.org/abs/1609.07018","open_access":"1"}],"scopus_import":"1","oa_version":"Submitted Version","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."}],"department":[{"_id":"MiLe"}],"date_updated":"2023-09-20T11:57:23Z","status":"public","type":"journal_article","_id":"1076"},{"article_number":"45702","publist_id":"6380","author":[{"first_name":"Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","last_name":"Bighin","orcid":"0000-0001-8823-9777","full_name":"Bighin, Giacomo"},{"last_name":"Salasnich","full_name":"Salasnich, Luca","first_name":"Luca"}],"article_processing_charge":"No","external_id":{"isi":["000398148100001"]},"title":"Vortices and antivortices in two-dimensional ultracold Fermi gases","citation":{"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.","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.","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","ieee":"G. Bighin and L. Salasnich, “Vortices and antivortices in two-dimensional ultracold Fermi gases,” Scientific Reports, vol. 7. Nature Publishing Group, 2017.","short":"G. Bighin, L. Salasnich, Scientific Reports 7 (2017)."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","quality_controlled":"1","publisher":"Nature Publishing Group","oa":1,"doi":"10.1038/srep45702","date_published":"2017-04-04T00:00:00Z","date_created":"2018-12-11T11:49:42Z","isi":1,"has_accepted_license":"1","year":"2017","day":"04","publication":"Scientific Reports","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","pubrep_id":"809","_id":"1015","department":[{"_id":"MiLe"}],"file_date_updated":"2018-12-12T10:12:32Z","date_updated":"2023-09-22T09:43:10Z","ddc":["539"],"scopus_import":"1","month":"04","intvolume":" 7","abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","volume":7,"publication_identifier":{"issn":["20452322"]},"publication_status":"published","file":[{"content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_id":"4950","file_size":478289,"date_updated":"2018-12-12T10:12:32Z","creator":"system","file_name":"IST-2017-809-v1+1_srep45702.pdf","date_created":"2018-12-12T10:12:32Z"}],"language":[{"iso":"eng"}]},{"article_processing_charge":"No","external_id":{"isi":["000407017100009"]},"publist_id":"6404","author":[{"last_name":"Bighin","orcid":"0000-0001-8823-9777","full_name":"Bighin, Giacomo","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","first_name":"Giacomo"},{"last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"}],"title":"Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment","citation":{"chicago":"Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum Impurities Interacting with a Many-Particle Environment.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.96.085410.","ista":"Bighin G, Lemeshko M. 2017. Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. Physical Review B - Condensed Matter and Materials Physics. 96(8), 085410.","mla":"Bighin, Giacomo, and Mikhail Lemeshko. “Diagrammatic Approach to Orbital Quantum Impurities Interacting with a Many-Particle Environment.” Physical Review B - Condensed Matter and Materials Physics, vol. 96, no. 8, 085410, American Physical Society, 2017, doi:10.1103/PhysRevB.96.085410.","ieee":"G. Bighin and M. Lemeshko, “Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment,” Physical Review B - Condensed Matter and Materials Physics, vol. 96, no. 8. American Physical Society, 2017.","short":"G. Bighin, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 96 (2017).","ama":"Bighin G, Lemeshko M. Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. Physical Review B - Condensed Matter and Materials Physics. 2017;96(8). doi:10.1103/PhysRevB.96.085410","apa":"Bighin, G., & Lemeshko, M. (2017). Diagrammatic approach to orbital quantum impurities interacting with a many-particle environment. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.96.085410"},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902"}],"article_number":"085410","date_created":"2018-12-11T11:49:36Z","date_published":"2017-08-07T00:00:00Z","doi":"10.1103/PhysRevB.96.085410","year":"2017","isi":1,"publication":"Physical Review B - Condensed Matter and Materials Physics","day":"07","oa":1,"quality_controlled":"1","publisher":"American Physical Society","department":[{"_id":"MiLe"}],"date_updated":"2023-09-22T09:53:17Z","type":"journal_article","status":"public","_id":"995","volume":96,"issue":"8","publication_status":"published","publication_identifier":{"issn":["24699950"]},"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://arxiv.org/abs/1704.02616","open_access":"1"}],"scopus_import":"1","intvolume":" 96","month":"08","abstract":[{"text":"Recently it was shown that an impurity exchanging orbital angular momentum with a surrounding bath can be described in terms of the angulon quasiparticle [Phys. Rev. Lett. 118, 095301 (2017)]. The angulon consists of a quantum rotor dressed by a many-particle field of boson excitations, and can be formed out of, for example, a molecule or a nonspherical atom in superfluid helium, or out of an electron coupled to lattice phonons or a Bose condensate. Here we develop an approach to the angulon based on the path-integral formalism, which sets the ground for a systematic, perturbative treatment of the angulon problem. The resulting perturbation series can be interpreted in terms of Feynman diagrams, from which, in turn, one can derive a set of diagrammatic rules. These rules extend the machinery of the graphical theory of angular momentum - well known from theoretical atomic spectroscopy - to the case where an environment with an infinite number of degrees of freedom is present. In particular, we show that each diagram can be interpreted as a 'skeleton', which enforces angular momentum conservation, dressed by an additional many-body contribution. This connection between the angulon theory and the graphical theory of angular momentum is particularly important as it allows to systematically and substantially simplify the analytical representation of each diagram. In order to exemplify the technique, we calculate the 1- and 2-loop contributions to the angulon self-energy, the spectral function, and the quasiparticle weight. The diagrammatic theory we develop paves the way to investigate next-to-leading order quantities in a more compact way compared to the variational approaches.","lang":"eng"}],"oa_version":"Submitted Version"},{"title":"Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules","author":[{"id":"339C7E5A-F248-11E8-B48F-1D18A9856A87","first_name":"Igor","last_name":"Cherepanov","full_name":"Cherepanov, Igor"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"}],"publist_id":"6405","article_processing_charge":"No","external_id":{"isi":["000416564000004"]},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"apa":"Cherepanov, I., & Lemeshko, M. (2017). Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. Physical Review Materials. American Physical Society. https://doi.org/10.1103/PhysRevMaterials.1.035602","ama":"Cherepanov I, Lemeshko M. Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. Physical Review Materials. 2017;1(3). doi:10.1103/PhysRevMaterials.1.035602","ieee":"I. Cherepanov and M. Lemeshko, “Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules,” Physical Review Materials, vol. 1, no. 3. American Physical Society, 2017.","short":"I. Cherepanov, M. Lemeshko, Physical Review Materials 1 (2017).","mla":"Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities in the Spectra of Matrix-Isolated Molecules.” Physical Review Materials, vol. 1, no. 3, American Physical Society, 2017, doi:10.1103/PhysRevMaterials.1.035602.","ista":"Cherepanov I, Lemeshko M. 2017. Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules. Physical Review Materials. 1(3).","chicago":"Cherepanov, Igor, and Mikhail Lemeshko. “Fingerprints of Angulon Instabilities in the Spectra of Matrix-Isolated Molecules.” Physical Review Materials. American Physical Society, 2017. https://doi.org/10.1103/PhysRevMaterials.1.035602."},"project":[{"grant_number":"P29902","name":"Quantum rotations in the presence of a many-body environment","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"name":"International IST Doctoral Program","grant_number":"665385","call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"}],"date_published":"2017-08-08T00:00:00Z","doi":"10.1103/PhysRevMaterials.1.035602","date_created":"2018-12-11T11:49:35Z","day":"08","publication":"Physical Review Materials","isi":1,"year":"2017","publisher":"American Physical Society","quality_controlled":"1","oa":1,"department":[{"_id":"MiLe"}],"date_updated":"2023-09-22T09:53:42Z","status":"public","type":"journal_article","_id":"994","volume":1,"issue":"3","ec_funded":1,"language":[{"iso":"eng"}],"publication_status":"published","month":"08","intvolume":" 1","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1705.09220","open_access":"1"}],"oa_version":"Submitted Version","abstract":[{"text":"The formation of vortices is usually considered to be the main mechanism of angular momentum disposal in superfluids. Recently, it was predicted that a superfluid can acquire angular momentum via an alternative, microscopic route -- namely, through interaction with rotating impurities, forming so-called `angulon quasiparticles' [Phys. Rev. Lett. 114, 203001 (2015)]. The angulon instabilities correspond to transfer of a small number of angular momentum quanta from the impurity to the superfluid, as opposed to vortex instabilities, where angular momentum is quantized in units of ℏ per atom. Furthermore, since conventional impurities (such as molecules) represent three-dimensional (3D) rotors, the angular momentum transferred is intrinsically 3D as well, as opposed to a merely planar rotation which is inherent to vortices. Herein we show that the angulon theory can explain the anomalous broadening of the spectroscopic lines observed for CH 3 and NH 3 molecules in superfluid helium nanodroplets, thereby providing a fingerprint of the emerging angulon instabilities in experiment.","lang":"eng"}]},{"publisher":"American Physical Society","quality_controlled":"1","oa":1,"day":"18","publication":"Physical Review Letters","isi":1,"year":"2017","date_published":"2017-07-18T00:00:00Z","doi":"10.1103/PhysRevLett.119.033905","date_created":"2018-12-11T11:49:18Z","article_number":"033905","project":[{"call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","citation":{"mla":"Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review Letters, vol. 119, no. 3, 033905, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.033905.","short":"B. Midya, V. Konotop, Physical Review Letters 119 (2017).","ieee":"B. Midya and V. Konotop, “Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons,” Physical Review Letters, vol. 119, no. 3. American Physical Society, 2017.","apa":"Midya, B., & Konotop, V. (2017). Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.119.033905","ama":"Midya B, Konotop V. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. 2017;119(3). doi:10.1103/PhysRevLett.119.033905","chicago":"Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.033905.","ista":"Midya B, Konotop V. 2017. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. 119(3), 033905."},"title":"Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons","publist_id":"6481","author":[{"full_name":"Midya, Bikashkali","last_name":"Midya","first_name":"Bikashkali","id":"456187FC-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Vladimir","full_name":"Konotop, Vladimir","last_name":"Konotop"}],"external_id":{"isi":["000405718200012"]},"article_processing_charge":"No","oa_version":"Submitted Version","abstract":[{"text":"We reveal the existence of continuous families of guided single-mode solitons in planar waveguides with weakly nonlinear active core and absorbing boundaries. Stable propagation of TE and TM-polarized solitons is accompanied by attenuation of all other modes, i.e., the waveguide features properties of conservative and dissipative systems. If the linear spectrum of the waveguide possesses exceptional points, which occurs in the case of TM polarization, an originally focusing (defocusing) material nonlinearity may become effectively defocusing (focusing). This occurs due to the geometric phase of the carried eigenmode when the surface impedance encircles the exceptional point. In its turn, the change of the effective nonlinearity ensures the existence of dark (bright) solitons in spite of focusing (defocusing) Kerr nonlinearity of the core. The existence of an exceptional point can also result in anomalous enhancement of the effective nonlinearity. In terms of practical applications, the nonlinearity of the reported waveguide can be manipulated by controlling the properties of the absorbing cladding.","lang":"eng"}],"month":"07","intvolume":" 119","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1706.04085 "}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["00319007"]},"publication_status":"published","issue":"3","volume":119,"ec_funded":1,"_id":"939","status":"public","type":"journal_article","date_updated":"2023-09-26T15:39:46Z","department":[{"_id":"MiLe"}]},{"_id":"997","status":"public","article_type":"original","type":"journal_article","date_updated":"2023-10-10T13:31:54Z","department":[{"_id":"MiLe"},{"_id":"RoSe"}],"oa_version":"Preprint","abstract":[{"lang":"eng","text":"Recently it was shown that molecules rotating in superfluid helium can be described in terms of the angulon quasiparticles (Phys. Rev. Lett. 118, 095301 (2017)). Here we demonstrate that in the experimentally realized regime the angulon can be seen as a point charge on a 2-sphere interacting with a gauge field of a non-abelian magnetic monopole. Unlike in several other settings, the gauge fields of the angulon problem emerge in the real coordinate space, as opposed to the momentum space or some effective parameter space. Furthermore, we find a topological transition associated with making the monopole abelian, which takes place in the vicinity of the previously reported angulon instabilities. These results pave the way for studying topological phenomena in experiments on molecules trapped in superfluid helium nanodroplets, as well as on other realizations of orbital impurity problems."}],"month":"12","intvolume":" 119","scopus_import":"1","main_file_link":[{"url":"https://arxiv.org/abs/1705.05162","open_access":"1"}],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["0031-9007"]},"publication_status":"published","volume":119,"issue":"23","ec_funded":1,"article_number":"235301","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"},{"grant_number":"694227","name":"Analysis of quantum many-body systems","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"name":"Quantum rotations in the presence of a many-body environment","grant_number":"P29902","_id":"26031614-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Yakaboylu, Enderalp, et al. “Emergence of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” Physical Review Letters, vol. 119, no. 23, 235301, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.235301.","ama":"Yakaboylu E, Deuchert A, Lemeshko M. Emergence of non-abelian magnetic monopoles in a quantum impurity problem. Physical Review Letters. 2017;119(23). doi:10.1103/PhysRevLett.119.235301","apa":"Yakaboylu, E., Deuchert, A., & Lemeshko, M. (2017). Emergence of non-abelian magnetic monopoles in a quantum impurity problem. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.119.235301","ieee":"E. Yakaboylu, A. Deuchert, and M. Lemeshko, “Emergence of non-abelian magnetic monopoles in a quantum impurity problem,” Physical Review Letters, vol. 119, no. 23. American Physical Society, 2017.","short":"E. Yakaboylu, A. Deuchert, M. Lemeshko, Physical Review Letters 119 (2017).","chicago":"Yakaboylu, Enderalp, Andreas Deuchert, and Mikhail Lemeshko. “Emergence of Non-Abelian Magnetic Monopoles in a Quantum Impurity Problem.” Physical Review Letters. American Physical Society, 2017. https://doi.org/10.1103/PhysRevLett.119.235301.","ista":"Yakaboylu E, Deuchert A, Lemeshko M. 2017. Emergence of non-abelian magnetic monopoles in a quantum impurity problem. Physical Review Letters. 119(23), 235301."},"title":"Emergence of non-abelian magnetic monopoles in a quantum impurity problem","author":[{"id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","first_name":"Enderalp","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp","last_name":"Yakaboylu"},{"last_name":"Deuchert","orcid":"0000-0003-3146-6746","full_name":"Deuchert, Andreas","first_name":"Andreas","id":"4DA65CD0-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko"}],"publist_id":"6401","external_id":{"isi":["000417132100007"],"arxiv":["1705.05162"]},"article_processing_charge":"No","publisher":"American Physical Society","quality_controlled":"1","oa":1,"day":"06","publication":"Physical Review Letters","isi":1,"year":"2017","date_published":"2017-12-06T00:00:00Z","doi":"10.1103/PhysRevLett.119.235301","date_created":"2018-12-11T11:49:36Z"},{"abstract":[{"text":"Iodine (I 2 ) molecules embedded in He nanodroplets are aligned by a 160 ps long laser pulse. The highest degree of alignment, occurring at the peak of the pulse and quantified by ⟨cos 2 θ 2D ⟩ , is measured as a function of the laser intensity. The results are well described by ⟨cos 2 θ 2D ⟩ calculated for a gas of isolated molecules each with an effective rotational constant of 0.6 times the gas-phase value, and at a temperature of 0.4 K. Theoretical analysis using the angulon quasiparticle to describe rotating molecules in superfluid helium rationalizes why the alignment mechanism is similar to that of isolated molecules with an effective rotational constant. A major advantage of molecules in He droplets is that their 0.4 K temperature leads to stronger alignment than what can generally be achieved for gas phase molecules -- here demonstrated by a direct comparison of the droplet results to measurements on a ∼ 1 K supersonic beam of isolated molecules. This point is further illustrated for more complex system by measurements on 1,4-diiodobenzene and 1,4-dibromobenzene. For all three molecular species studied the highest values of ⟨cos 2 θ 2D ⟩ achieved in He droplets exceed 0.96. ","lang":"eng"}],"oa_version":"Submitted Version","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1704.03684"}],"scopus_import":"1","intvolume":" 147","month":"06","publication_status":"published","publication_identifier":{"issn":["00219606"]},"language":[{"iso":"eng"}],"volume":147,"issue":"1","_id":"996","type":"journal_article","status":"public","date_updated":"2024-02-28T13:02:26Z","department":[{"_id":"MiLe"}],"oa":1,"quality_controlled":"1","publisher":"AIP Publishing","year":"2017","isi":1,"publication":"The Journal of Chemical Physics","day":"01","date_created":"2018-12-11T11:49:36Z","date_published":"2017-06-01T00:00:00Z","doi":"10.1063/1.4983703","article_number":"013946","citation":{"mla":"Shepperson, Benjamin, et al. “Strongly Aligned Molecules inside Helium Droplets in the Near-Adiabatic Regime.” The Journal of Chemical Physics, vol. 147, no. 1, 013946, AIP Publishing, 2017, doi:10.1063/1.4983703.","short":"B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko, H. Stapelfeldt, The Journal of Chemical Physics 147 (2017).","ieee":"B. Shepperson, A. Chatterley, A. Søndergaard, L. Christiansen, M. Lemeshko, and H. Stapelfeldt, “Strongly aligned molecules inside helium droplets in the near-adiabatic regime,” The Journal of Chemical Physics, vol. 147, no. 1. AIP Publishing, 2017.","ama":"Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt H. Strongly aligned molecules inside helium droplets in the near-adiabatic regime. The Journal of Chemical Physics. 2017;147(1). doi:10.1063/1.4983703","apa":"Shepperson, B., Chatterley, A., Søndergaard, A., Christiansen, L., Lemeshko, M., & Stapelfeldt, H. (2017). Strongly aligned molecules inside helium droplets in the near-adiabatic regime. The Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/1.4983703","chicago":"Shepperson, Benjamin, Adam Chatterley, Anders Søndergaard, Lars Christiansen, Mikhail Lemeshko, and Henrik Stapelfeldt. “Strongly Aligned Molecules inside Helium Droplets in the Near-Adiabatic Regime.” The Journal of Chemical Physics. AIP Publishing, 2017. https://doi.org/10.1063/1.4983703.","ista":"Shepperson B, Chatterley A, Søndergaard A, Christiansen L, Lemeshko M, Stapelfeldt H. 2017. Strongly aligned molecules inside helium droplets in the near-adiabatic regime. The Journal of Chemical Physics. 147(1), 013946."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","external_id":{"isi":["000405089400047"]},"publist_id":"6403","author":[{"last_name":"Shepperson","full_name":"Shepperson, Benjamin","first_name":"Benjamin"},{"first_name":"Adam","full_name":"Chatterley, Adam","last_name":"Chatterley"},{"first_name":"Anders","last_name":"Søndergaard","full_name":"Søndergaard, Anders"},{"full_name":"Christiansen, Lars","last_name":"Christiansen","first_name":"Lars"},{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"},{"full_name":"Stapelfeldt, Henrik","last_name":"Stapelfeldt","first_name":"Henrik"}],"title":"Strongly aligned molecules inside helium droplets in the near-adiabatic regime"},{"_id":"1204","type":"journal_article","status":"public","citation":{"chicago":"Amir, Ariel, Mikhail Lemeshko, and Tadashi Tokieda. “Surprises in Numerical Expressions of Physical Constants.” American Mathematical Monthly. Mathematical Association of America, 2016. https://doi.org/10.4169/amer.math.monthly.123.6.609.","ista":"Amir A, Lemeshko M, Tokieda T. 2016. Surprises in numerical expressions of physical constants. American Mathematical Monthly. 123(6), 609–612.","mla":"Amir, Ariel, et al. “Surprises in Numerical Expressions of Physical Constants.” American Mathematical Monthly, vol. 123, no. 6, Mathematical Association of America, 2016, pp. 609–12, doi:10.4169/amer.math.monthly.123.6.609.","ama":"Amir A, Lemeshko M, Tokieda T. Surprises in numerical expressions of physical constants. American Mathematical Monthly. 2016;123(6):609-612. doi:10.4169/amer.math.monthly.123.6.609","apa":"Amir, A., Lemeshko, M., & Tokieda, T. (2016). Surprises in numerical expressions of physical constants. American Mathematical Monthly. Mathematical Association of America. https://doi.org/10.4169/amer.math.monthly.123.6.609","ieee":"A. Amir, M. Lemeshko, and T. Tokieda, “Surprises in numerical expressions of physical constants,” American Mathematical Monthly, vol. 123, no. 6. Mathematical Association of America, pp. 609–612, 2016.","short":"A. Amir, M. Lemeshko, T. Tokieda, American Mathematical Monthly 123 (2016) 609–612."},"date_updated":"2021-01-12T06:49:04Z","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Ariel","last_name":"Amir","full_name":"Amir, Ariel"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Tadashi","full_name":"Tokieda, Tadashi","last_name":"Tokieda"}],"publist_id":"6143","title":"Surprises in numerical expressions of physical constants","department":[{"_id":"MiLe"}],"abstract":[{"lang":"eng","text":"In science, as in life, "surprises" can be adequately appreciated only in the presence of a null model, what we expect a priori. In physics, theories sometimes express the values of dimensionless physical constants as combinations of mathematical constants like π or e. The inverse problem also arises, whereby the measured value of a physical constant admits a "surprisingly" simple approximation in terms of well-known mathematical constants. Can we estimate the probability for this to be a mere coincidence, rather than an inkling of some theory? We answer the question in the most naive form."}],"oa_version":"Preprint","scopus_import":1,"quality_controlled":"1","publisher":"Mathematical Association of America","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1603.00299"}],"oa":1,"month":"06","intvolume":" 123","publication_status":"published","year":"2016","day":"01","publication":"American Mathematical Monthly","language":[{"iso":"eng"}],"page":"609 - 612","volume":123,"doi":"10.4169/amer.math.monthly.123.6.609","date_published":"2016-06-01T00:00:00Z","issue":"6","date_created":"2018-12-11T11:50:42Z"},{"oa":1,"quality_controlled":"1","publisher":"Wiley-Blackwell","publication":"ChemPhysChem","day":"18","year":"2016","date_created":"2018-12-11T11:50:43Z","date_published":"2016-09-18T00:00:00Z","doi":"10.1002/cphc.201601042","page":"3649 - 3654","project":[{"call_identifier":"H2020","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","name":"International IST Doctoral Program","grant_number":"665385"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” ChemPhysChem, vol. 17, no. 22, Wiley-Blackwell, 2016, pp. 3649–54, doi:10.1002/cphc.201601042.","apa":"Redchenko, E., & Lemeshko, M. (2016). Libration of strongly oriented polar molecules inside a superfluid. ChemPhysChem. Wiley-Blackwell. https://doi.org/10.1002/cphc.201601042","ama":"Redchenko E, Lemeshko M. Libration of strongly oriented polar molecules inside a superfluid. ChemPhysChem. 2016;17(22):3649-3654. doi:10.1002/cphc.201601042","short":"E. Redchenko, M. Lemeshko, ChemPhysChem 17 (2016) 3649–3654.","ieee":"E. Redchenko and M. Lemeshko, “Libration of strongly oriented polar molecules inside a superfluid,” ChemPhysChem, vol. 17, no. 22. Wiley-Blackwell, pp. 3649–3654, 2016.","chicago":"Redchenko, Elena, and Mikhail Lemeshko. “Libration of Strongly Oriented Polar Molecules inside a Superfluid.” ChemPhysChem. Wiley-Blackwell, 2016. https://doi.org/10.1002/cphc.201601042.","ista":"Redchenko E, Lemeshko M. 2016. Libration of strongly oriented polar molecules inside a superfluid. ChemPhysChem. 17(22), 3649–3654."},"title":"Libration of strongly oriented polar molecules inside a superfluid","publist_id":"6140","author":[{"first_name":"Elena","id":"2C21D6E8-F248-11E8-B48F-1D18A9856A87","full_name":"Redchenko, Elena","last_name":"Redchenko"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"}],"oa_version":"Preprint","abstract":[{"lang":"eng","text":"We study a polar molecule immersed in a superfluid environment, such as a helium nanodroplet or a Bose–Einstein condensate, in the presence of a strong electrostatic field. We show that coupling of the molecular pendular motion, induced by the field, to the fluctuating bath leads to formation of pendulons—spherical harmonic librators dressed by a field of many-particle excitations. We study the behavior of the pendulon in a broad range of molecule–bath and molecule–field interaction strengths, and reveal that its spectrum features a series of instabilities which are absent in the field-free case of the angulon quasiparticle. Furthermore, we show that an external field allows to fine-tune the positions of these instabilities in the molecular rotational spectrum. This opens the door to detailed experimental studies of redistribution of orbital angular momentum in many-particle systems. © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim"}],"intvolume":" 17","month":"09","main_file_link":[{"url":"https://arxiv.org/abs/1609.08161","open_access":"1"}],"scopus_import":1,"language":[{"iso":"eng"}],"publication_status":"published","ec_funded":1,"volume":17,"issue":"22","_id":"1206","status":"public","type":"journal_article","date_updated":"2021-01-12T06:49:05Z","department":[{"_id":"JoFi"},{"_id":"MiLe"}]},{"year":"2016","day":"13","publication":"Physical Review A - Atomic, Molecular, and Optical Physics","doi":"10.1103/PhysRevA.94.041601","date_published":"2016-10-13T00:00:00Z","date_created":"2018-12-11T11:51:09Z","acknowledgement":"The work was supported by the NSF through a grant for the Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and the Smithsonian Astrophysical Observatory. B.M. acknowledges financial support received from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA grant agreement No. 291734. M.T. acknowledges support from the EU Marie Curie COFUND action (ICFOnest), the EU Grants ERC AdG OSYRIS, FP7 SIQS and EQuaM, FETPROACT QUIC, the Spanish Ministry Grants FOQUS (FIS2013-46768-P) and Severo Ochoa (SEV-2015-0522), Generalitat de Catalunya (SGR 874), Fundacio Cellex, the National Science Centre (2015/19/D/ST4/02173), and the PL-Grid Infrastructure.","quality_controlled":"1","publisher":"American Physical Society","oa":1,"citation":{"chicago":"Midya, Bikashkali, Michał Tomza, Richard Schmidt, and Mikhail Lemeshko. “Rotation of Cold Molecular Ions inside a Bose-Einstein Condensate.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevA.94.041601.","ista":"Midya B, Tomza M, Schmidt R, Lemeshko M. 2016. Rotation of cold molecular ions inside a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics. 94(4), 041601.","mla":"Midya, Bikashkali, et al. “Rotation of Cold Molecular Ions inside a Bose-Einstein Condensate.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 94, no. 4, 041601, American Physical Society, 2016, doi:10.1103/PhysRevA.94.041601.","apa":"Midya, B., Tomza, M., Schmidt, R., & Lemeshko, M. (2016). Rotation of cold molecular ions inside a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.94.041601","ama":"Midya B, Tomza M, Schmidt R, Lemeshko M. Rotation of cold molecular ions inside a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics. 2016;94(4). doi:10.1103/PhysRevA.94.041601","short":"B. Midya, M. Tomza, R. Schmidt, M. Lemeshko, Physical Review A - Atomic, Molecular, and Optical Physics 94 (2016).","ieee":"B. Midya, M. Tomza, R. Schmidt, and M. Lemeshko, “Rotation of cold molecular ions inside a Bose-Einstein condensate,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 94, no. 4. American Physical Society, 2016."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Midya, Bikashkali","last_name":"Midya","id":"456187FC-F248-11E8-B48F-1D18A9856A87","first_name":"Bikashkali"},{"first_name":"Michał","full_name":"Tomza, Michał","last_name":"Tomza"},{"first_name":"Richard","full_name":"Schmidt, Richard","last_name":"Schmidt"},{"last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"publist_id":"6030","title":"Rotation of cold molecular ions inside a Bose-Einstein condensate","article_number":"041601","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"publication_status":"published","language":[{"iso":"eng"}],"issue":"4","volume":94,"ec_funded":1,"abstract":[{"lang":"eng","text":"We use recently developed angulon theory [R. Schmidt and M. Lemeshko, Phys. Rev. Lett. 114, 203001 (2015)PRLTAO0031-900710.1103/PhysRevLett.114.203001] to study the rotational spectrum of a cyanide molecular anion immersed into Bose-Einstein condensates of rubidium and strontium. Based on ab initio potential energy surfaces, we provide a detailed study of the rotational Lamb shift and many-body-induced fine structure which arise due to dressing of molecular rotation by a field of phonon excitations. We demonstrate that the magnitude of these effects is large enough in order to be observed in modern experiments on cold molecular ions. Furthermore, we introduce a novel method to construct pseudopotentials starting from the ab initio potential energy surfaces, which provides a means to obtain effective coupling constants for low-energy polaron models."}],"oa_version":"Preprint","scopus_import":1,"main_file_link":[{"url":"https://arxiv.org/abs/1607.06092","open_access":"1"}],"month":"10","intvolume":" 94","date_updated":"2021-01-12T06:49:37Z","department":[{"_id":"MiLe"}],"_id":"1286","type":"journal_article","status":"public"},{"year":"2016","has_accepted_license":"1","publication":"New Journal of Physics","day":"22","date_created":"2018-12-11T11:51:29Z","doi":"10.1088/1367-2630/18/9/093042","date_published":"2016-09-22T00:00:00Z","acknowledgement":"We acknowledge stimulating discussions with Ken Brown, Tommaso Calarco, Andrew Daley, Suzanne\r\nMcEndoo, Tobias Osborne, Cindy Regal, Luis Santos, Micha\r\nł\r\nTomza, and Martin Zwierlein. The work was supported by the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA grant agreement no. [291734], by the Volkswagen Foundation, and by DFG within SFB 1227 (DQ-mat).","oa":1,"publisher":"IOP Publishing Ltd.","quality_controlled":"1","citation":{"apa":"Kaczmarczyk, J., Weimer, H., & Lemeshko, M. (2016). Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics. IOP Publishing Ltd. https://doi.org/10.1088/1367-2630/18/9/093042","ama":"Kaczmarczyk J, Weimer H, Lemeshko M. Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics. 2016;18(9). doi:10.1088/1367-2630/18/9/093042","short":"J. Kaczmarczyk, H. Weimer, M. Lemeshko, New Journal of Physics 18 (2016).","ieee":"J. Kaczmarczyk, H. Weimer, and M. Lemeshko, “Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model,” New Journal of Physics, vol. 18, no. 9. IOP Publishing Ltd., 2016.","mla":"Kaczmarczyk, Jan, et al. “Dissipative Preparation of Antiferromagnetic Order in the Fermi-Hubbard Model.” New Journal of Physics, vol. 18, no. 9, 093042, IOP Publishing Ltd., 2016, doi:10.1088/1367-2630/18/9/093042.","ista":"Kaczmarczyk J, Weimer H, Lemeshko M. 2016. Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model. New Journal of Physics. 18(9), 093042.","chicago":"Kaczmarczyk, Jan, Hendrik Weimer, and Mikhail Lemeshko. “Dissipative Preparation of Antiferromagnetic Order in the Fermi-Hubbard Model.” New Journal of Physics. IOP Publishing Ltd., 2016. https://doi.org/10.1088/1367-2630/18/9/093042."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publist_id":"5909","author":[{"orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","last_name":"Kaczmarczyk","first_name":"Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Weimer","full_name":"Weimer, Hendrik","first_name":"Hendrik"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"}],"title":"Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model","article_number":"093042","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"publication_status":"published","language":[{"iso":"eng"}],"file":[{"date_created":"2018-12-12T10:17:52Z","file_name":"IST-2016-655-v1+1_njp_18_9_093042.pdf","creator":"system","date_updated":"2020-07-14T12:44:45Z","file_size":1076029,"file_id":"5309","checksum":"2a43e235222755e31ffbd369882c61de","access_level":"open_access","relation":"main_file","content_type":"application/pdf"}],"ec_funded":1,"volume":18,"issue":"9","abstract":[{"lang":"eng","text":"The Fermi-Hubbard model is one of the key models of condensed matter physics, which holds a\r\n\r\npotential for explaining the mystery of high-temperature superconductivity. Recent progress in\r\n\r\nultracold atoms in optical lattices has paved the way to studying the model’s phase diagram using\r\n\r\nthe tools of quantum simulation, which emerged as a promising alternative to the numerical\r\n\r\ncalculations plagued by the infamous sign problem. However, the temperatures achieved using\r\n\r\nelaborate laser cooling protocols so far have been too high to show the appearance of\r\n\r\nantiferromagnetic (AF) and superconducting quantum phases directly. In this work, we demonstrate\r\n\r\nthat using the machinery of dissipative quantum state engineering, one can observe the emergence of\r\n\r\nthe AF order in the Fermi-Hubbard model with fermions in optical lattices. The core of the approach\r\n\r\nis to add incoherent laser scattering in such a way that the AF state emerges as the dark state of\r\n\r\nthe driven-dissipative dynamics. The proposed controlled dissipation channels described in this work\r\n\r\nare straightforward to add to already existing experimental setups."}],"oa_version":"Published Version","scopus_import":1,"intvolume":" 18","month":"09","date_updated":"2021-01-12T06:50:01Z","ddc":["530"],"department":[{"_id":"MiLe"}],"file_date_updated":"2020-07-14T12:44:45Z","_id":"1343","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"journal_article","pubrep_id":"655","status":"public"},{"publisher":"American Physical Society","quality_controlled":"1","oa":1,"acknowledgement":"We are grateful to Eugene Demler, Jan Kaczmarczyk, Laleh Safari, and Hendrik Weimer for insightful discussions. The work was supported by the NSF through a grant for the Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University and Smithsonian Astrophysical Observatory.","date_published":"2016-01-01T00:00:00Z","doi":"10.1103/PhysRevX.6.011012","date_created":"2018-12-11T11:51:30Z","day":"01","publication":"Physical Review X","has_accepted_license":"1","year":"2016","article_number":"011012","title":"Deformation of a quantum many-particle system by a rotating impurity","author":[{"full_name":"Schmidt, Richard","last_name":"Schmidt","first_name":"Richard"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"}],"publist_id":"5902","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle System by a Rotating Impurity.” Physical Review X. American Physical Society, 2016. https://doi.org/10.1103/PhysRevX.6.011012.","ista":"Schmidt R, Lemeshko M. 2016. Deformation of a quantum many-particle system by a rotating impurity. Physical Review X. 6(1), 011012.","mla":"Schmidt, Richard, and Mikhail Lemeshko. “Deformation of a Quantum Many-Particle System by a Rotating Impurity.” Physical Review X, vol. 6, no. 1, 011012, American Physical Society, 2016, doi:10.1103/PhysRevX.6.011012.","ama":"Schmidt R, Lemeshko M. Deformation of a quantum many-particle system by a rotating impurity. Physical Review X. 2016;6(1). doi:10.1103/PhysRevX.6.011012","apa":"Schmidt, R., & Lemeshko, M. (2016). Deformation of a quantum many-particle system by a rotating impurity. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.6.011012","ieee":"R. Schmidt and M. Lemeshko, “Deformation of a quantum many-particle system by a rotating impurity,” Physical Review X, vol. 6, no. 1. American Physical Society, 2016.","short":"R. Schmidt, M. Lemeshko, Physical Review X 6 (2016)."},"month":"01","intvolume":" 6","scopus_import":1,"oa_version":"Published Version","abstract":[{"text":"During the past 70 years, the quantum theory of angular momentum has been successfully applied to describing the properties of nuclei, atoms, and molecules, and their interactions with each other as well as with external fields. Because of the properties of quantum rotations, the angular-momentum algebra can be of tremendous complexity even for a few interacting particles, such as valence electrons of an atom, not to mention larger many-particle systems. In this work, we study an example of the latter: A rotating quantum impurity coupled to a many-body bosonic bath. In the regime of strong impurity-bath couplings, the problem involves the addition of an infinite number of angular momenta, which renders it intractable using currently available techniques. Here, we introduce a novel canonical transformation that allows us to eliminate the complex angular-momentum algebra from such a class of many-body problems. In addition, the transformation exposes the problem's constants of motion, and renders it solvable exactly in the limit of a slowly rotating impurity. We exemplify the technique by showing that there exists a critical rotational speed at which the impurity suddenly acquires one quantum of angular momentum from the many-particle bath. Such an instability is accompanied by the deformation of the phonon density in the frame rotating along with the impurity.","lang":"eng"}],"volume":6,"issue":"1","file":[{"content_type":"application/pdf","access_level":"open_access","relation":"main_file","checksum":"6757a164d3c38905e05b2b5a188cb8ff","file_id":"5183","date_updated":"2020-07-14T12:44:45Z","file_size":1165869,"creator":"system","date_created":"2018-12-12T10:15:59Z","file_name":"IST-2016-652-v1+1_PhysRevX.6.011012.pdf"}],"language":[{"iso":"eng"}],"publication_status":"published","status":"public","pubrep_id":"652","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"_id":"1347","file_date_updated":"2020-07-14T12:44:45Z","department":[{"_id":"MiLe"}],"ddc":["530"],"date_updated":"2021-01-12T06:50:03Z"},{"oa_version":"Preprint","abstract":[{"text":"We study the interplay of nematic and superconducting order in the two-dimensional Hubbard model and show that they can coexist, especially when superconductivity is not the energetically dominant phase. Due to a breaking of the C4 symmetry, the coexisting phase inherently contains admixture of the s-wave pairing components. As a result, the superconducting gap exhibits nonstandard features including changed nodal directions. Our results also show that in the optimally doped regime the pure superconducting phase is typically unstable towards developing nematicity (breaking of the C4 symmetry). This has implications for the cuprate high-Tc superconductors, for which in this regime the so-called intertwined orders have recently been observed. Namely, the coexisting phase may be viewed as a precursor to such more involved patterns of symmetry breaking.","lang":"eng"}],"intvolume":" 94","month":"08","main_file_link":[{"url":"http://arxiv.org/abs/1512.06688","open_access":"1"}],"scopus_import":1,"language":[{"iso":"eng"}],"publication_status":"published","ec_funded":1,"volume":94,"issue":"8","_id":"1352","status":"public","type":"journal_article","date_updated":"2021-01-12T06:50:05Z","department":[{"_id":"MiLe"}],"acknowledgement":"The authors are grateful to Florian Gebhard and Mikhail Lemeshko for discussions and critical reading of the manuscript. The work was supported by the Ministry of Science and Higher Education in Poland through the Iuventus Plus Grant No. IP2012 017172, as well as by the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant Agreement No. 291734. J.K. acknowledges hospitality of the Leibniz Universität in Hannover where a large part of the work was performed.","oa":1,"quality_controlled":"1","publisher":"American Physical Society","publication":"Physical Review B - Condensed Matter and Materials Physics","day":"30","year":"2016","date_created":"2018-12-11T11:51:32Z","doi":"10.1103/PhysRevB.94.085152","date_published":"2016-08-30T00:00:00Z","article_number":"085152","project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Kaczmarczyk, Jan, et al. “Coexistence of Nematic Order and Superconductivity in the Hubbard Model.” Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 8, 085152, American Physical Society, 2016, doi:10.1103/PhysRevB.94.085152.","short":"J. Kaczmarczyk, T. Schickling, J. Bünemann, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","ieee":"J. Kaczmarczyk, T. Schickling, and J. Bünemann, “Coexistence of nematic order and superconductivity in the Hubbard model,” Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 8. American Physical Society, 2016.","apa":"Kaczmarczyk, J., Schickling, T., & Bünemann, J. (2016). Coexistence of nematic order and superconductivity in the Hubbard model. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.94.085152","ama":"Kaczmarczyk J, Schickling T, Bünemann J. Coexistence of nematic order and superconductivity in the Hubbard model. Physical Review B - Condensed Matter and Materials Physics. 2016;94(8). doi:10.1103/PhysRevB.94.085152","chicago":"Kaczmarczyk, Jan, Tobias Schickling, and Jörg Bünemann. “Coexistence of Nematic Order and Superconductivity in the Hubbard Model.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevB.94.085152.","ista":"Kaczmarczyk J, Schickling T, Bünemann J. 2016. Coexistence of nematic order and superconductivity in the Hubbard model. Physical Review B - Condensed Matter and Materials Physics. 94(8), 085152."},"title":"Coexistence of nematic order and superconductivity in the Hubbard model","author":[{"id":"46C405DE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk"},{"first_name":"Tobias","last_name":"Schickling","full_name":"Schickling, Tobias"},{"first_name":"Jörg","last_name":"Bünemann","full_name":"Bünemann, Jörg"}],"publist_id":"5897"},{"department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:50:12Z","status":"public","type":"journal_article","_id":"1368","ec_funded":1,"issue":"2","volume":94,"language":[{"iso":"eng"}],"publication_status":"published","intvolume":" 94","month":"07","main_file_link":[{"url":"https://arxiv.org/abs/1510.00224","open_access":"1"}],"scopus_import":1,"oa_version":"Preprint","abstract":[{"lang":"eng","text":"Superconductivity in heavy-fermion systems has an unconventional nature and is considered to originate from the universal features of the electronic structure. Here, the Anderson lattice model is studied by means of the full variational Gutzwiller wave function incorporating nonlocal effects of the on-site interaction. We show that the d-wave superconducting ground state can be driven solely by interelectronic correlations. The proposed microscopic mechanism leads to a multigap superconductivity with the dominant contribution due to f electrons and in the dx2−y2-wave channel. Our results rationalize several important observations for CeCoIn5."}],"title":"Correlation driven d wave superconductivity in Anderson lattice model: Two gaps","publist_id":"5844","author":[{"full_name":"Wysokiński, Marcin","last_name":"Wysokiński","first_name":"Marcin"},{"last_name":"Kaczmarczyk","orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan"},{"first_name":"Jozef","last_name":"Spałek","full_name":"Spałek, Jozef"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"ama":"Wysokiński M, Kaczmarczyk J, Spałek J. Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and Materials Physics. 2016;94(2). doi:10.1103/PhysRevB.94.024517","apa":"Wysokiński, M., Kaczmarczyk, J., & Spałek, J. (2016). Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.94.024517","short":"M. Wysokiński, J. Kaczmarczyk, J. Spałek, Physical Review B - Condensed Matter and Materials Physics 94 (2016).","ieee":"M. Wysokiński, J. Kaczmarczyk, and J. Spałek, “Correlation driven d wave superconductivity in Anderson lattice model: Two gaps,” Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 2. American Physical Society, 2016.","mla":"Wysokiński, Marcin, et al. “Correlation Driven d Wave Superconductivity in Anderson Lattice Model: Two Gaps.” Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 2, 024517, American Physical Society, 2016, doi:10.1103/PhysRevB.94.024517.","ista":"Wysokiński M, Kaczmarczyk J, Spałek J. 2016. Correlation driven d wave superconductivity in Anderson lattice model: Two gaps. Physical Review B - Condensed Matter and Materials Physics. 94(2), 024517.","chicago":"Wysokiński, Marcin, Jan Kaczmarczyk, and Jozef Spałek. “Correlation Driven d Wave Superconductivity in Anderson Lattice Model: Two Gaps.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevB.94.024517."},"project":[{"call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"article_number":"024517","date_created":"2018-12-11T11:51:37Z","date_published":"2016-07-01T00:00:00Z","doi":"10.1103/PhysRevB.94.024517","publication":"Physical Review B - Condensed Matter and Materials Physics","day":"01","year":"2016","oa":1,"publisher":"American Physical Society","quality_controlled":"1","acknowledgement":"The work has been supported by the National Science Center (NCN) under the Grant MAESTRO, No.\r\nDEC-2012/04/A/ST3/00342. "},{"_id":"1416","article_number":"195145","type":"journal_article","status":"public","citation":{"mla":"Van Loon, Erik, et al. “Interaction-Driven Lifshitz Transition with Dipolar Fermions in Optical Lattices.” Physical Review B - Condensed Matter and Materials Physics, vol. 93, no. 19, 195145, American Physical Society, 2016, doi:10.1103/PhysRevB.93.195145.","ama":"Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. Physical Review B - Condensed Matter and Materials Physics. 2016;93(19). doi:10.1103/PhysRevB.93.195145","apa":"Van Loon, E., Katsnelson, M., Chomaz, L., & Lemeshko, M. (2016). Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.93.195145","ieee":"E. Van Loon, M. Katsnelson, L. Chomaz, and M. Lemeshko, “Interaction-driven Lifshitz transition with dipolar fermions in optical lattices,” Physical Review B - Condensed Matter and Materials Physics, vol. 93, no. 19. American Physical Society, 2016.","short":"E. Van Loon, M. Katsnelson, L. Chomaz, M. Lemeshko, Physical Review B - Condensed Matter and Materials Physics 93 (2016).","chicago":"Van Loon, Erik, Mikhail Katsnelson, Lauriane Chomaz, and Mikhail Lemeshko. “Interaction-Driven Lifshitz Transition with Dipolar Fermions in Optical Lattices.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevB.93.195145.","ista":"Van Loon E, Katsnelson M, Chomaz L, Lemeshko M. 2016. Interaction-driven Lifshitz transition with dipolar fermions in optical lattices. Physical Review B - Condensed Matter and Materials Physics. 93(19), 195145."},"date_updated":"2021-01-12T06:50:36Z","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publist_id":"5791","author":[{"first_name":"Erik","last_name":"Van Loon","full_name":"Van Loon, Erik"},{"full_name":"Katsnelson, Mikhail","last_name":"Katsnelson","first_name":"Mikhail"},{"first_name":"Lauriane","last_name":"Chomaz","full_name":"Chomaz, Lauriane"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"}],"department":[{"_id":"MiLe"}],"title":"Interaction-driven Lifshitz transition with dipolar fermions in optical lattices","abstract":[{"text":"Anisotropic dipole-dipole interactions between ultracold dipolar fermions break the symmetry of the Fermi surface and thereby deform it. Here we demonstrate that such a Fermi surface deformation induces a topological phase transition - the so-called Lifshitz transition - in the regime accessible to present-day experiments. We describe the impact of the Lifshitz transition on observable quantities such as the Fermi surface topology, the density-density correlation function, and the excitation spectrum of the system. The Lifshitz transition in ultracold atoms can be controlled by tuning the dipole orientation and, in contrast to the transition studied in crystalline solids, is completely interaction driven.","lang":"eng"}],"oa_version":"Preprint","scopus_import":1,"publisher":"American Physical Society","quality_controlled":"1","oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1603.09358"}],"month":"05","intvolume":" 93","year":"2016","publication_status":"published","day":"15","language":[{"iso":"eng"}],"publication":"Physical Review B - Condensed Matter and Materials Physics","issue":"19","date_published":"2016-05-15T00:00:00Z","doi":"10.1103/PhysRevB.93.195145","volume":93,"date_created":"2018-12-11T11:51:54Z"},{"publication":"Journal of Physics: Condensed Matter","language":[{"iso":"eng"}],"day":"29","year":"2016","publication_status":"published","date_created":"2018-12-11T11:51:55Z","ec_funded":1,"issue":"17","date_published":"2016-03-29T00:00:00Z","doi":"10.1088/0953-8984/28/17/175701","volume":28,"oa_version":"None","abstract":[{"text":"We study the superconducting phase of the Hubbard model using the Gutzwiller variational wave function (GWF) and the recently proposed diagrammatic expansion technique (DE-GWF). The DE-GWF method works on the level of the full GWF and in the thermodynamic limit. Here, we consider a finite-size system to study the accuracy of the results as a function of the system size (which is practically unrestricted). We show that the finite-size scaling used, e.g. in the variational Monte Carlo method can lead to significant, uncontrolled errors. The presented research is the first step towards applying the DE-GWF method in studies of inhomogeneous situations, including systems with impurities, defects, inhomogeneous phases, or disorder.","lang":"eng"}],"intvolume":" 28","month":"03","quality_controlled":"1","publisher":"IOP Publishing Ltd.","scopus_import":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2021-01-12T06:50:36Z","citation":{"mla":"Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite Systems: Superconductivity in the Hubbard Model.” Journal of Physics: Condensed Matter, vol. 28, no. 17, 175701, IOP Publishing Ltd., 2016, doi:10.1088/0953-8984/28/17/175701.","apa":"Tomski, A., & Kaczmarczyk, J. (2016). Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. Journal of Physics: Condensed Matter. IOP Publishing Ltd. https://doi.org/10.1088/0953-8984/28/17/175701","ama":"Tomski A, Kaczmarczyk J. Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. Journal of Physics: Condensed Matter. 2016;28(17). doi:10.1088/0953-8984/28/17/175701","ieee":"A. Tomski and J. Kaczmarczyk, “Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model,” Journal of Physics: Condensed Matter, vol. 28, no. 17. IOP Publishing Ltd., 2016.","short":"A. Tomski, J. Kaczmarczyk, Journal of Physics: Condensed Matter 28 (2016).","chicago":"Tomski, Andrzej, and Jan Kaczmarczyk. “Gutzwiller Wave Function for Finite Systems: Superconductivity in the Hubbard Model.” Journal of Physics: Condensed Matter. IOP Publishing Ltd., 2016. https://doi.org/10.1088/0953-8984/28/17/175701.","ista":"Tomski A, Kaczmarczyk J. 2016. Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model. Journal of Physics: Condensed Matter. 28(17), 175701."},"title":"Gutzwiller wave function for finite systems: Superconductivity in the Hubbard model","department":[{"_id":"MiLe"}],"publist_id":"5788","author":[{"full_name":"Tomski, Andrzej","last_name":"Tomski","first_name":"Andrzej"},{"full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk","first_name":"Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87"}],"article_number":"175701","_id":"1419","status":"public","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"type":"journal_article"},{"oa":1,"quality_controlled":"1","publisher":"American Physical Society","acknowledgement":"This research was supported in part by FCT, Portugal, through Project No. PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE. ","date_created":"2018-12-11T11:52:21Z","date_published":"2016-03-07T00:00:00Z","doi":"10.1103/PhysRevA.93.032502","year":"2016","publication":"Physical Review A - Atomic, Molecular, and Optical Physics","day":"07","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"032502","author":[{"full_name":"Amaro, Pedro","last_name":"Amaro","first_name":"Pedro"},{"first_name":"Filippo","last_name":"Fratini","full_name":"Fratini, Filippo"},{"full_name":"Safari, Laleh","last_name":"Safari","first_name":"Laleh","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Jorge","last_name":"Machado","full_name":"Machado, Jorge"},{"full_name":"Guerra, Mauro","last_name":"Guerra","first_name":"Mauro"},{"last_name":"Indelicato","full_name":"Indelicato, Paul","first_name":"Paul"},{"full_name":"Santos, José","last_name":"Santos","first_name":"José"}],"publist_id":"5683","title":"Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model","citation":{"chicago":"Amaro, Pedro, Filippo Fratini, Laleh Safari, Jorge Machado, Mauro Guerra, Paul Indelicato, and José Santos. “Relativistic Evaluation of the Two-Photon Decay of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential Model.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2016. https://doi.org/10.1103/PhysRevA.93.032502.","ista":"Amaro P, Fratini F, Safari L, Machado J, Guerra M, Indelicato P, Santos J. 2016. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. Physical Review A - Atomic, Molecular, and Optical Physics. 93(3), 032502.","mla":"Amaro, Pedro, et al. “Relativistic Evaluation of the Two-Photon Decay of the Metastable 1s22s2p3P0 State in Berylliumlike Ions with an Effective-Potential Model.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 93, no. 3, 032502, American Physical Society, 2016, doi:10.1103/PhysRevA.93.032502.","apa":"Amaro, P., Fratini, F., Safari, L., Machado, J., Guerra, M., Indelicato, P., & Santos, J. (2016). Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.93.032502","ama":"Amaro P, Fratini F, Safari L, et al. Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model. Physical Review A - Atomic, Molecular, and Optical Physics. 2016;93(3). doi:10.1103/PhysRevA.93.032502","short":"P. Amaro, F. Fratini, L. Safari, J. Machado, M. Guerra, P. Indelicato, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 93 (2016).","ieee":"P. Amaro et al., “Relativistic evaluation of the two-photon decay of the metastable 1s22s2p3P0 state in berylliumlike ions with an effective-potential model,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 93, no. 3. American Physical Society, 2016."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"url":"http://arxiv.org/abs/1508.06169","open_access":"1"}],"scopus_import":1,"intvolume":" 93","month":"03","abstract":[{"text":"The two-photon 1s2 2s 2p 3P0 1s22s2 1S0 transition in berylliumlike ions is theoretically investigated within a fully relativistic framework and a second-order perturbation theory. We focus our analysis on how electron correlation, as well as the negative-energy spectrum, can affect the forbidden E1M1 decay rate. For this purpose, we include the electronic correlation via an effective local potential and within a single configuration-state model. Due to its experimental interest, evaluations of decay rates are performed for berylliumlike xenon and uranium. We find that the negative-energy contribution can be neglected at the present level of accuracy in the evaluation of the decay rate. On the other hand, if contributions of electronic correlation are not carefully taken into account, it may change the lifetime of the metastable state by up to 20%. By performing a full-relativistic jj-coupling calculation, we found a decrease of the decay rate by two orders of magnitude compared to non-relativistic LS-coupling calculations, for the selected heavy ions.","lang":"eng"}],"oa_version":"Preprint","ec_funded":1,"volume":93,"issue":"3","publication_status":"published","language":[{"iso":"eng"}],"type":"journal_article","status":"public","_id":"1496","department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:51:09Z"},{"oa":1,"quality_controlled":"1","publisher":"Optica Publishing Group","acknowledgement":"The research of B.M. is supported by the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant No. [291734].","page":"4621 - 4624","date_created":"2018-12-11T11:51:09Z","doi":"10.1364/OL.41.004621","date_published":"2016-10-15T00:00:00Z","year":"2016","publication":"Optics Letters","day":"15","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"article_processing_charge":"No","publist_id":"6029","author":[{"first_name":"Bikashkali","id":"456187FC-F248-11E8-B48F-1D18A9856A87","last_name":"Midya","full_name":"Midya, Bikashkali"},{"full_name":"Konotop, Vladimir","last_name":"Konotop","first_name":"Vladimir"}],"title":"Modes and exceptional points in waveguides with impedance boundary conditions","citation":{"chicago":"Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points in Waveguides with Impedance Boundary Conditions.” Optics Letters. Optica Publishing Group, 2016. https://doi.org/10.1364/OL.41.004621.","ista":"Midya B, Konotop V. 2016. Modes and exceptional points in waveguides with impedance boundary conditions. Optics Letters. 41(20), 4621–4624.","mla":"Midya, Bikashkali, and Vladimir Konotop. “Modes and Exceptional Points in Waveguides with Impedance Boundary Conditions.” Optics Letters, vol. 41, no. 20, Optica Publishing Group, 2016, pp. 4621–24, doi:10.1364/OL.41.004621.","short":"B. Midya, V. Konotop, Optics Letters 41 (2016) 4621–4624.","ieee":"B. Midya and V. Konotop, “Modes and exceptional points in waveguides with impedance boundary conditions,” Optics Letters, vol. 41, no. 20. Optica Publishing Group, pp. 4621–4624, 2016.","apa":"Midya, B., & Konotop, V. (2016). Modes and exceptional points in waveguides with impedance boundary conditions. Optics Letters. Optica Publishing Group. https://doi.org/10.1364/OL.41.004621","ama":"Midya B, Konotop V. Modes and exceptional points in waveguides with impedance boundary conditions. Optics Letters. 2016;41(20):4621-4624. doi:10.1364/OL.41.004621"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1609.02863"}],"scopus_import":"1","intvolume":" 41","month":"10","abstract":[{"text":"A planar waveguide with an impedance boundary, composed of nonperfect metallic plates, and with passive or active dielectric filling, is considered. We show the possibility of selective mode guiding and amplification when a homogeneous pump is added to the dielectric and analyze differences in TE and TM mode propagation. Such a non-conservative system is also shown to feature exceptional points for specific and experimentally tunable parameters, which are described for a particular case of transparent dielectric.","lang":"eng"}],"oa_version":"Preprint","ec_funded":1,"volume":41,"issue":"20","publication_status":"published","language":[{"iso":"eng"}],"type":"journal_article","status":"public","_id":"1287","department":[{"_id":"MiLe"}],"date_updated":"2023-10-17T12:16:24Z"},{"intvolume":" 92","month":"12","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1511.03585"}],"scopus_import":1,"oa_version":"Preprint","abstract":[{"text":"We investigate the quantum interference shifts between energetically close states, where the state structure is observed by laser spectroscopy. We report a compact and analytical expression that models the quantum interference induced shift for any admixture of circular polarization of the incident laser and angle of observation. An experimental scenario free of quantum interference can thus be predicted with this formula. Although this study is exemplified here for muonic deuterium, it can be applied to any other laser spectroscopy measurement of ns-n′p frequencies of a nonrelativistic atomic system, via an ns→n′p→n′′s scheme.","lang":"eng"}],"ec_funded":1,"issue":"6","volume":92,"language":[{"iso":"eng"}],"publication_status":"published","status":"public","article_type":"original","type":"journal_article","_id":"1587","department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:51:47Z","oa":1,"quality_controlled":"1","publisher":"American Physical Society","date_created":"2018-12-11T11:52:53Z","doi":"10.1103/PhysRevA.92.062506","date_published":"2015-12-31T00:00:00Z","publication":"Physical Review A - Atomic, Molecular, and Optical Physics","day":"31","year":"2015","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"article_number":"062506","title":"Quantum interference shifts in laser spectroscopy with elliptical polarization","article_processing_charge":"No","external_id":{"arxiv":["1511.03585"]},"author":[{"last_name":"Amaro","full_name":"Amaro, Pedro","first_name":"Pedro"},{"first_name":"Filippo","full_name":"Fratini, Filippo","last_name":"Fratini"},{"id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","first_name":"Laleh","full_name":"Safari, Laleh","last_name":"Safari"},{"last_name":"Antognini","full_name":"Antognini, Aldo","first_name":"Aldo"},{"first_name":"Paul","last_name":"Indelicato","full_name":"Indelicato, Paul"},{"last_name":"Pohl","full_name":"Pohl, Randolf","first_name":"Randolf"},{"first_name":"José","full_name":"Santos, José","last_name":"Santos"}],"publist_id":"5584","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Amaro P, Fratini F, Safari L, Antognini A, Indelicato P, Pohl R, Santos J. 2015. Quantum interference shifts in laser spectroscopy with elliptical polarization. Physical Review A - Atomic, Molecular, and Optical Physics. 92(6), 062506.","chicago":"Amaro, Pedro, Filippo Fratini, Laleh Safari, Aldo Antognini, Paul Indelicato, Randolf Pohl, and José Santos. “Quantum Interference Shifts in Laser Spectroscopy with Elliptical Polarization.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2015. https://doi.org/10.1103/PhysRevA.92.062506.","short":"P. Amaro, F. Fratini, L. Safari, A. Antognini, P. Indelicato, R. Pohl, J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 92 (2015).","ieee":"P. Amaro et al., “Quantum interference shifts in laser spectroscopy with elliptical polarization,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 92, no. 6. American Physical Society, 2015.","ama":"Amaro P, Fratini F, Safari L, et al. Quantum interference shifts in laser spectroscopy with elliptical polarization. Physical Review A - Atomic, Molecular, and Optical Physics. 2015;92(6). doi:10.1103/PhysRevA.92.062506","apa":"Amaro, P., Fratini, F., Safari, L., Antognini, A., Indelicato, P., Pohl, R., & Santos, J. (2015). Quantum interference shifts in laser spectroscopy with elliptical polarization. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.92.062506","mla":"Amaro, Pedro, et al. “Quantum Interference Shifts in Laser Spectroscopy with Elliptical Polarization.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 92, no. 6, 062506, American Physical Society, 2015, doi:10.1103/PhysRevA.92.062506."}},{"author":[{"first_name":"Pedro","last_name":"Amaro","full_name":"Amaro, Pedro"},{"first_name":"Beatrice","full_name":"Franke, Beatrice","last_name":"Franke"},{"last_name":"Krauth","full_name":"Krauth, Julian","first_name":"Julian"},{"last_name":"Diepold","full_name":"Diepold, Marc","first_name":"Marc"},{"last_name":"Fratini","full_name":"Fratini, Filippo","first_name":"Filippo"},{"id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","first_name":"Laleh","full_name":"Safari, Laleh","last_name":"Safari"},{"first_name":"Jorge","last_name":"Machado","full_name":"Machado, Jorge"},{"full_name":"Antognini, Aldo","last_name":"Antognini","first_name":"Aldo"},{"first_name":"Franz","last_name":"Kottmann","full_name":"Kottmann, Franz"},{"first_name":"Paul","full_name":"Indelicato, Paul","last_name":"Indelicato"},{"first_name":"Randolf","last_name":"Pohl","full_name":"Pohl, Randolf"},{"full_name":"Santos, José","last_name":"Santos","first_name":"José"}],"publist_id":"5451","title":"Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3","citation":{"chicago":"Amaro, Pedro, Beatrice Franke, Julian Krauth, Marc Diepold, Filippo Fratini, Laleh Safari, Jorge Machado, et al. “Quantum Interference Effects in Laser Spectroscopy of Muonic Hydrogen, Deuterium, and Helium-3.” Physical Review A. American Physical Society, 2015. https://doi.org/10.1103/PhysRevA.92.022514.","ista":"Amaro P, Franke B, Krauth J, Diepold M, Fratini F, Safari L, Machado J, Antognini A, Kottmann F, Indelicato P, Pohl R, Santos J. 2015. Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3. Physical Review A. 92(2), 022514.","mla":"Amaro, Pedro, et al. “Quantum Interference Effects in Laser Spectroscopy of Muonic Hydrogen, Deuterium, and Helium-3.” Physical Review A, vol. 92, no. 2, 022514, American Physical Society, 2015, doi:10.1103/PhysRevA.92.022514.","apa":"Amaro, P., Franke, B., Krauth, J., Diepold, M., Fratini, F., Safari, L., … Santos, J. (2015). Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.92.022514","ama":"Amaro P, Franke B, Krauth J, et al. Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3. Physical Review A. 2015;92(2). doi:10.1103/PhysRevA.92.022514","short":"P. Amaro, B. Franke, J. Krauth, M. Diepold, F. Fratini, L. Safari, J. Machado, A. Antognini, F. Kottmann, P. Indelicato, R. Pohl, J. Santos, Physical Review A 92 (2015).","ieee":"P. Amaro et al., “Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3,” Physical Review A, vol. 92, no. 2. American Physical Society, 2015."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"article_number":"022514","date_published":"2015-08-28T00:00:00Z","doi":"10.1103/PhysRevA.92.022514","date_created":"2018-12-11T11:53:30Z","year":"2015","day":"28","publication":"Physical Review A","publisher":"American Physical Society","quality_controlled":"1","oa":1,"department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:52:34Z","type":"journal_article","status":"public","_id":"1693","volume":92,"issue":"2","ec_funded":1,"publication_status":"published","language":[{"iso":"eng"}],"scopus_import":1,"main_file_link":[{"url":"http://arxiv.org/abs/1506.02734","open_access":"1"}],"month":"08","intvolume":" 92","abstract":[{"text":"Quantum interference between energetically close states is theoretically investigated, with the state structure being observed via laser spectroscopy. In this work, we focus on hyperfine states of selected hydrogenic muonic isotopes, and on how quantum interference affects the measured Lamb shift. The process of photon excitation and subsequent photon decay is implemented within the framework of nonrelativistic second-order perturbation theory. Due to its experimental interest, calculations are performed for muonic hydrogen, deuterium, and helium-3. We restrict our analysis to the case of photon scattering by incident linear polarized photons and the polarization of the scattered photons not being observed. We conclude that while quantum interference effects can be safely neglected in muonic hydrogen and helium-3, in the case of muonic deuterium there are resonances with close proximity, where quantum interference effects can induce shifts up to a few percent of the linewidth, assuming a pointlike detector. However, by taking into account the geometry of the setup used by the CREMA collaboration, this effect is reduced to less than 0.2% of the linewidth in all possible cases, which makes it irrelevant at the present level of accuracy. © 2015 American Physical Society.","lang":"eng"}],"oa_version":"Preprint"},{"main_file_link":[{"url":"http://arxiv.org/abs/1503.03738","open_access":"1"}],"scopus_import":1,"intvolume":" 252","month":"09","abstract":[{"text":"We give a comprehensive introduction into a diagrammatic method that allows for the evaluation of Gutzwiller wave functions in finite spatial dimensions. We discuss in detail some numerical schemes that turned out to be useful in the real-space evaluation of the diagrams. The method is applied to the problem of d-wave superconductivity in a two-dimensional single-band Hubbard model. Here, we discuss in particular the role of long-range contributions in our diagrammatic expansion. We further reconsider our previous analysis on the kinetic energy gain in the superconducting state.","lang":"eng"}],"oa_version":"Preprint","ec_funded":1,"volume":252,"issue":"9","publication_status":"published","language":[{"iso":"eng"}],"type":"journal_article","status":"public","_id":"1695","department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:52:34Z","oa":1,"quality_controlled":"1","publisher":"Wiley","page":"2059 - 2071","date_created":"2018-12-11T11:53:31Z","date_published":"2015-09-01T00:00:00Z","doi":"10.1002/pssb.201552082","year":"2015","publication":"Physica Status Solidi (B): Basic Solid State Physics","day":"01","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"author":[{"id":"46C405DE-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","full_name":"Kaczmarczyk, Jan","orcid":"0000-0002-1629-3675","last_name":"Kaczmarczyk"},{"first_name":"Tobias","last_name":"Schickling","full_name":"Schickling, Tobias"},{"first_name":"Jörg","last_name":"Bünemann","full_name":"Bünemann, Jörg"}],"publist_id":"5449","title":"Evaluation techniques for Gutzwiller wave functions in finite dimensions","citation":{"short":"J. Kaczmarczyk, T. Schickling, J. Bünemann, Physica Status Solidi (B): Basic Solid State Physics 252 (2015) 2059–2071.","ieee":"J. Kaczmarczyk, T. Schickling, and J. Bünemann, “Evaluation techniques for Gutzwiller wave functions in finite dimensions,” Physica Status Solidi (B): Basic Solid State Physics, vol. 252, no. 9. Wiley, pp. 2059–2071, 2015.","apa":"Kaczmarczyk, J., Schickling, T., & Bünemann, J. (2015). Evaluation techniques for Gutzwiller wave functions in finite dimensions. Physica Status Solidi (B): Basic Solid State Physics. Wiley. https://doi.org/10.1002/pssb.201552082","ama":"Kaczmarczyk J, Schickling T, Bünemann J. Evaluation techniques for Gutzwiller wave functions in finite dimensions. Physica Status Solidi (B): Basic Solid State Physics. 2015;252(9):2059-2071. doi:10.1002/pssb.201552082","mla":"Kaczmarczyk, Jan, et al. “Evaluation Techniques for Gutzwiller Wave Functions in Finite Dimensions.” Physica Status Solidi (B): Basic Solid State Physics, vol. 252, no. 9, Wiley, 2015, pp. 2059–71, doi:10.1002/pssb.201552082.","ista":"Kaczmarczyk J, Schickling T, Bünemann J. 2015. Evaluation techniques for Gutzwiller wave functions in finite dimensions. Physica Status Solidi (B): Basic Solid State Physics. 252(9), 2059–2071.","chicago":"Kaczmarczyk, Jan, Tobias Schickling, and Jörg Bünemann. “Evaluation Techniques for Gutzwiller Wave Functions in Finite Dimensions.” Physica Status Solidi (B): Basic Solid State Physics. Wiley, 2015. https://doi.org/10.1002/pssb.201552082."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"status":"public","type":"journal_article","_id":"1696","department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:52:35Z","intvolume":" 92","month":"09","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1505.07003"}],"scopus_import":1,"oa_version":"Preprint","abstract":[{"text":"The recently proposed diagrammatic expansion (DE) technique for the full Gutzwiller wave function (GWF) is applied to the Anderson lattice model. This approach allows for a systematic evaluation of the expectation values with full Gutzwiller wave function in finite-dimensional systems. It introduces results extending in an essential manner those obtained by means of the standard Gutzwiller approximation (GA), which is variationally exact only in infinite dimensions. Within the DE-GWF approach we discuss the principal paramagnetic properties and their relevance to heavy-fermion systems. We demonstrate the formation of an effective, narrow f band originating from atomic f-electron states and subsequently interpret this behavior as a direct itineracy of f electrons; it represents a combined effect of both the hybridization and the correlations induced by the Coulomb repulsive interaction. Such a feature is absent on the level of GA, which is equivalent to the zeroth order of our expansion. Formation of the hybridization- and electron-concentration-dependent narrow f band rationalizes the common assumption of such dispersion of f levels in the phenomenological modeling of the band structure of CeCoIn5. Moreover, it is shown that the emerging f-electron direct itineracy leads in a natural manner to three physically distinct regimes within a single model that are frequently discussed for 4f- or 5f-electron compounds as separate model situations. We identify these regimes as (i) the mixed-valence regime, (ii) Kondo/almost-Kondo insulating regime, and (iii) the Kondo-lattice limit when the f-electron occupancy is very close to the f-state half filling, ⟨nˆf⟩→1. The nonstandard features of the emerging correlated quantum liquid state are stressed.","lang":"eng"}],"ec_funded":1,"issue":"12","volume":92,"language":[{"iso":"eng"}],"publication_status":"published","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"article_number":"125135","title":"Gutzwiller wave function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states","publist_id":"5448","author":[{"last_name":"Wysokiński","full_name":"Wysokiński, Marcin","first_name":"Marcin"},{"first_name":"Jan","id":"46C405DE-F248-11E8-B48F-1D18A9856A87","last_name":"Kaczmarczyk","orcid":"0000-0002-1629-3675","full_name":"Kaczmarczyk, Jan"},{"first_name":"Jozef","full_name":"Spałek, Jozef","last_name":"Spałek"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ieee":"M. Wysokiński, J. Kaczmarczyk, and J. Spałek, “Gutzwiller wave function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states,” Physical Review B, vol. 92, no. 12. American Physical Society, 2015.","short":"M. Wysokiński, J. Kaczmarczyk, J. Spałek, Physical Review B 92 (2015).","apa":"Wysokiński, M., Kaczmarczyk, J., & Spałek, J. (2015). Gutzwiller wave function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.92.125135","ama":"Wysokiński M, Kaczmarczyk J, Spałek J. Gutzwiller wave function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states. Physical Review B. 2015;92(12). doi:10.1103/PhysRevB.92.125135","mla":"Wysokiński, Marcin, et al. “Gutzwiller Wave Function Solution for Anderson Lattice Model: Emerging Universal Regimes of Heavy Quasiparticle States.” Physical Review B, vol. 92, no. 12, 125135, American Physical Society, 2015, doi:10.1103/PhysRevB.92.125135.","ista":"Wysokiński M, Kaczmarczyk J, Spałek J. 2015. Gutzwiller wave function solution for Anderson lattice model: Emerging universal regimes of heavy quasiparticle states. Physical Review B. 92(12), 125135.","chicago":"Wysokiński, Marcin, Jan Kaczmarczyk, and Jozef Spałek. “Gutzwiller Wave Function Solution for Anderson Lattice Model: Emerging Universal Regimes of Heavy Quasiparticle States.” Physical Review B. American Physical Society, 2015. https://doi.org/10.1103/PhysRevB.92.125135."},"oa":1,"publisher":"American Physical Society","quality_controlled":"1","acknowledgement":"The work was partly supported by the National Science Centre (NCN) under MAESTRO, Grant No. DEC-2012/04/A/ST3/00342. M.W. acknowledges the hospitality of the Institute of Science and Technology Austria during the final stage of development of the present work, as well as partial financial support from the Society-Environment-Technology project of the Jagiellonian University for that stay. J.K. acknowledges 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 ].","date_created":"2018-12-11T11:53:31Z","doi":"10.1103/PhysRevB.92.125135","date_published":"2015-09-18T00:00:00Z","publication":"Physical Review B","day":"18","year":"2015"},{"day":"10","language":[{"iso":"eng"}],"publication":"Physical Review B","year":"2015","publication_status":"published","issue":"8","date_published":"2015-08-10T00:00:00Z","doi":"10.1103/PhysRevB.92.081106","volume":92,"date_created":"2018-12-11T11:53:32Z","oa_version":"Preprint","acknowledgement":"The work is supported by European Research Council (ERC) Advanced Grant No. 338957 FEMTO/NANO.","abstract":[{"lang":"eng","text":"We use the dual boson approach to reveal the phase diagram of the Fermi-Hubbard model with long-range dipole-dipole interactions. By using a large-scale finite-temperature calculation on a 64×64 square lattice we demonstrate the existence of a novel phase, possessing an "ultralong-range" order. The fingerprint of this phase - the density correlation function - features a nontrivial behavior on a scale of tens of lattice sites. We study the properties and the stability of the ultralong-range-ordered phase, and show that it is accessible in modern experiments with ultracold polar molecules and magnetic atoms."}],"month":"08","intvolume":" 92","scopus_import":1,"publisher":"American Physical Society","oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1506.06007"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Van Loon, Erik, et al. “Ultralong-Range Order in the Fermi-Hubbard Model with Long-Range Interactions.” Physical Review B, vol. 92, no. 8, 081106, American Physical Society, 2015, doi:10.1103/PhysRevB.92.081106.","short":"E. Van Loon, M. Katsnelson, M. Lemeshko, Physical Review B 92 (2015).","ieee":"E. Van Loon, M. Katsnelson, and M. Lemeshko, “Ultralong-range order in the Fermi-Hubbard model with long-range interactions,” Physical Review B, vol. 92, no. 8. American Physical Society, 2015.","apa":"Van Loon, E., Katsnelson, M., & Lemeshko, M. (2015). Ultralong-range order in the Fermi-Hubbard model with long-range interactions. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.92.081106","ama":"Van Loon E, Katsnelson M, Lemeshko M. Ultralong-range order in the Fermi-Hubbard model with long-range interactions. Physical Review B. 2015;92(8). doi:10.1103/PhysRevB.92.081106","chicago":"Van Loon, Erik, Mikhail Katsnelson, and Mikhail Lemeshko. “Ultralong-Range Order in the Fermi-Hubbard Model with Long-Range Interactions.” Physical Review B. American Physical Society, 2015. https://doi.org/10.1103/PhysRevB.92.081106.","ista":"Van Loon E, Katsnelson M, Lemeshko M. 2015. Ultralong-range order in the Fermi-Hubbard model with long-range interactions. Physical Review B. 92(8), 081106."},"date_updated":"2021-01-12T06:52:37Z","title":"Ultralong-range order in the Fermi-Hubbard model with long-range interactions","department":[{"_id":"MiLe"}],"publist_id":"5441","author":[{"full_name":"Van Loon, Erik","last_name":"Van Loon","first_name":"Erik"},{"first_name":"Mikhail","last_name":"Katsnelson","full_name":"Katsnelson, Mikhail"},{"first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko"}],"article_number":"081106","_id":"1700","status":"public","type":"journal_article"},{"file":[{"file_name":"IST-2016-446-v1+1_document.pdf","date_created":"2018-12-12T10:15:59Z","creator":"system","file_size":1900925,"date_updated":"2020-07-14T12:45:17Z","file_id":"5184","checksum":"551f751a75b39b89a1db2f7f498f9a49","relation":"main_file","access_level":"open_access","content_type":"application/pdf"}],"language":[{"iso":"eng"}],"publication_status":"published","issue":"4","volume":17,"oa_version":"Published Version","abstract":[{"lang":"eng","text":"We investigate the occurrence of rotons in a quadrupolar Bose–Einstein condensate confined to two dimensions. Depending on the particle density, the ratio of the contact and quadrupole–quadrupole interactions, and the alignment of the quadrupole moments with respect to the confinement plane, the dispersion relation features two or four point-like roton minima or one ring-shaped minimum. We map out the entire parameter space of the roton behavior and identify the instability regions. We propose to observe the exotic rotons by monitoring the characteristic density wave dynamics resulting from a short local perturbation, and discuss the possibilities to detect the predicted effects in state-of-the-art experiments with ultracold homonuclear molecules.\r\n"}],"month":"04","intvolume":" 17","scopus_import":1,"ddc":["530"],"date_updated":"2021-01-12T06:53:22Z","department":[{"_id":"MiLe"}],"file_date_updated":"2020-07-14T12:45:17Z","_id":"1812","status":"public","pubrep_id":"446","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"day":"01","publication":"New Journal of Physics","has_accepted_license":"1","year":"2015","date_published":"2015-04-01T00:00:00Z","doi":"10.1088/1367-2630/17/4/045005","date_created":"2018-12-11T11:54:09Z","publisher":"IOP Publishing Ltd.","quality_controlled":"1","oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"short":"M. Lahrz, M. Lemeshko, L. Mathey, New Journal of Physics 17 (2015).","ieee":"M. Lahrz, M. Lemeshko, and L. Mathey, “Exotic roton excitations in quadrupolar Bose–Einstein condensates ,” New Journal of Physics, vol. 17, no. 4. IOP Publishing Ltd., 2015.","apa":"Lahrz, M., Lemeshko, M., & Mathey, L. (2015). Exotic roton excitations in quadrupolar Bose–Einstein condensates . New Journal of Physics. IOP Publishing Ltd. https://doi.org/10.1088/1367-2630/17/4/045005","ama":"Lahrz M, Lemeshko M, Mathey L. Exotic roton excitations in quadrupolar Bose–Einstein condensates . New Journal of Physics. 2015;17(4). doi:10.1088/1367-2630/17/4/045005","mla":"Lahrz, Martin, et al. “Exotic Roton Excitations in Quadrupolar Bose–Einstein Condensates .” New Journal of Physics, vol. 17, no. 4, 045005, IOP Publishing Ltd., 2015, doi:10.1088/1367-2630/17/4/045005.","ista":"Lahrz M, Lemeshko M, Mathey L. 2015. Exotic roton excitations in quadrupolar Bose–Einstein condensates . New Journal of Physics. 17(4), 045005.","chicago":"Lahrz, Martin, Mikhail Lemeshko, and Ludwig Mathey. “Exotic Roton Excitations in Quadrupolar Bose–Einstein Condensates .” New Journal of Physics. IOP Publishing Ltd., 2015. https://doi.org/10.1088/1367-2630/17/4/045005."},"title":"Exotic roton excitations in quadrupolar Bose–Einstein condensates ","publist_id":"5294","author":[{"last_name":"Lahrz","full_name":"Lahrz, Martin","first_name":"Martin"},{"full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail"},{"full_name":"Mathey, Ludwig","last_name":"Mathey","first_name":"Ludwig"}],"article_processing_charge":"No","article_number":"045005"},{"date_published":"2015-05-20T00:00:00Z","doi":"10.1063/1.4921227","date_created":"2018-12-11T11:54:08Z","day":"20","publication":"Journal of Mathematical Physics","year":"2015","publisher":"American Institute of Physics","oa":1,"acknowledgement":"The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement n◦ [291734]. F.F. acknowledges support by Fundação de Amparo à Pesquisa do estado de Minas Gerais (FAPEMIG), by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and by the Austrian Science Fund (FWF) through the START Grant No. Y 591-N16.","title":"Analytical evaluation of atomic form factors: Application to Rayleigh scattering","author":[{"first_name":"Laleh","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","full_name":"Safari, Laleh","last_name":"Safari"},{"full_name":"Santos, José","last_name":"Santos","first_name":"José"},{"first_name":"Pedro","last_name":"Amaro","full_name":"Amaro, Pedro"},{"full_name":"Jänkälä, Kari","last_name":"Jänkälä","first_name":"Kari"},{"last_name":"Fratini","full_name":"Fratini, Filippo","first_name":"Filippo"}],"publist_id":"5295","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ama":"Safari L, Santos J, Amaro P, Jänkälä K, Fratini F. Analytical evaluation of atomic form factors: Application to Rayleigh scattering. Journal of Mathematical Physics. 2015;56(5). doi:10.1063/1.4921227","apa":"Safari, L., Santos, J., Amaro, P., Jänkälä, K., & Fratini, F. (2015). Analytical evaluation of atomic form factors: Application to Rayleigh scattering. Journal of Mathematical Physics. American Institute of Physics. https://doi.org/10.1063/1.4921227","ieee":"L. Safari, J. Santos, P. Amaro, K. Jänkälä, and F. Fratini, “Analytical evaluation of atomic form factors: Application to Rayleigh scattering,” Journal of Mathematical Physics, vol. 56, no. 5. American Institute of Physics, 2015.","short":"L. Safari, J. Santos, P. Amaro, K. Jänkälä, F. Fratini, Journal of Mathematical Physics 56 (2015).","mla":"Safari, Laleh, et al. “Analytical Evaluation of Atomic Form Factors: Application to Rayleigh Scattering.” Journal of Mathematical Physics, vol. 56, no. 5, 052105, American Institute of Physics, 2015, doi:10.1063/1.4921227.","ista":"Safari L, Santos J, Amaro P, Jänkälä K, Fratini F. 2015. Analytical evaluation of atomic form factors: Application to Rayleigh scattering. Journal of Mathematical Physics. 56(5), 052105.","chicago":"Safari, Laleh, José Santos, Pedro Amaro, Kari Jänkälä, and Filippo Fratini. “Analytical Evaluation of Atomic Form Factors: Application to Rayleigh Scattering.” Journal of Mathematical Physics. American Institute of Physics, 2015. https://doi.org/10.1063/1.4921227."},"project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"article_number":"052105","issue":"5","volume":56,"ec_funded":1,"language":[{"iso":"eng"}],"publication_status":"published","month":"05","intvolume":" 56","scopus_import":1,"main_file_link":[{"url":"http://arxiv.org/abs/1409.0110","open_access":"1"}],"oa_version":"Preprint","abstract":[{"lang":"eng","text":"Atomic form factors are widely used for the characterization of targets and specimens, from crystallography to biology. By using recent mathematical results, here we derive an analytical expression for the atomic form factor within the independent particle model constructed from nonrelativistic screened hydrogenic wave functions. The range of validity of this analytical expression is checked by comparing the analytically obtained form factors with the ones obtained within the Hartee-Fock method. As an example, we apply our analytical expression for the atomic form factor to evaluate the differential cross section for Rayleigh scattering off neutral atoms."}],"department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:53:21Z","status":"public","type":"journal_article","_id":"1811"},{"month":"05","intvolume":" 114","publisher":"American Physical Society","quality_controlled":"1","scopus_import":1,"oa":1,"main_file_link":[{"url":"http://arxiv.org/abs/1502.03447","open_access":"1"}],"oa_version":"Preprint","abstract":[{"text":"We develop a microscopic theory describing a quantum impurity whose rotational degree of freedom is coupled to a many-particle bath. We approach the problem by introducing the concept of an “angulon”—a quantum rotor dressed by a quantum field—and reveal its quasiparticle properties using a combination of variational and diagrammatic techniques. Our theory predicts renormalization of the impurity rotational structure, such as that observed in experiments with molecules in superfluid helium droplets, in terms of a rotational Lamb shift induced by the many-particle environment. Furthermore, we discover a rich many-body-induced fine structure, emerging in rotational spectra due to a redistribution of angular momentum within the quantum many-body system.","lang":"eng"}],"date_published":"2015-05-18T00:00:00Z","volume":114,"doi":"10.1103/PhysRevLett.114.203001","issue":"20","date_created":"2018-12-11T11:54:09Z","day":"18","language":[{"iso":"eng"}],"publication":"Physical Review Letters","year":"2015","publication_status":"published","status":"public","type":"journal_article","article_number":"203001","_id":"1813","title":"Rotation of quantum impurities in the presence of a many-body environment","department":[{"_id":"MiLe"}],"author":[{"first_name":"Richard","last_name":"Schmidt","full_name":"Schmidt, Richard"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko"}],"publist_id":"5293","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Schmidt R, Lemeshko M. 2015. Rotation of quantum impurities in the presence of a many-body environment. Physical Review Letters. 114(20), 203001.","chicago":"Schmidt, Richard, and Mikhail Lemeshko. “Rotation of Quantum Impurities in the Presence of a Many-Body Environment.” Physical Review Letters. American Physical Society, 2015. https://doi.org/10.1103/PhysRevLett.114.203001.","ieee":"R. Schmidt and M. Lemeshko, “Rotation of quantum impurities in the presence of a many-body environment,” Physical Review Letters, vol. 114, no. 20. American Physical Society, 2015.","short":"R. Schmidt, M. Lemeshko, Physical Review Letters 114 (2015).","apa":"Schmidt, R., & Lemeshko, M. (2015). Rotation of quantum impurities in the presence of a many-body environment. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.114.203001","ama":"Schmidt R, Lemeshko M. Rotation of quantum impurities in the presence of a many-body environment. Physical Review Letters. 2015;114(20). doi:10.1103/PhysRevLett.114.203001","mla":"Schmidt, Richard, and Mikhail Lemeshko. “Rotation of Quantum Impurities in the Presence of a Many-Body Environment.” Physical Review Letters, vol. 114, no. 20, 203001, American Physical Society, 2015, doi:10.1103/PhysRevLett.114.203001."},"date_updated":"2021-01-12T06:53:22Z"},{"publisher":"American Physical Society","quality_controlled":"1","oa":1,"doi":"10.1103/PhysRevLett.113.243601","date_published":"2014-12-08T00:00:00Z","date_created":"2018-12-11T11:55:06Z","day":"08","publication":"Physical Review Letters","year":"2014","project":[{"grant_number":"291734","name":"International IST Postdoc Fellowship Programme","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"}],"article_number":"243601","title":"Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport and rectification","publist_id":"5085","author":[{"full_name":"Fratini, Filippo","last_name":"Fratini","first_name":"Filippo"},{"last_name":"Mascarenhas","full_name":"Mascarenhas, Eduardo","first_name":"Eduardo"},{"full_name":"Safari, Laleh","last_name":"Safari","id":"3C325E5E-F248-11E8-B48F-1D18A9856A87","first_name":"Laleh"},{"full_name":"Poizat, Jean","last_name":"Poizat","first_name":"Jean"},{"last_name":"Valente","full_name":"Valente, Daniel","first_name":"Daniel"},{"last_name":"Auffèves","full_name":"Auffèves, Alexia","first_name":"Alexia"},{"full_name":"Gerace, Dario","last_name":"Gerace","first_name":"Dario"},{"full_name":"Santos, Marcelo","last_name":"Santos","first_name":"Marcelo"}],"user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Fratini F, Mascarenhas E, Safari L, Poizat J, Valente D, Auffèves A, Gerace D, Santos M. 2014. Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport and rectification. Physical Review Letters. 113(24), 243601.","chicago":"Fratini, Filippo, Eduardo Mascarenhas, Laleh Safari, Jean Poizat, Daniel Valente, Alexia Auffèves, Dario Gerace, and Marcelo Santos. “Fabry-Perot Interferometer with Quantum Mirrors: Nonlinear Light Transport and Rectification.” Physical Review Letters. American Physical Society, 2014. https://doi.org/10.1103/PhysRevLett.113.243601.","apa":"Fratini, F., Mascarenhas, E., Safari, L., Poizat, J., Valente, D., Auffèves, A., … Santos, M. (2014). Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport and rectification. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.113.243601","ama":"Fratini F, Mascarenhas E, Safari L, et al. Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport and rectification. Physical Review Letters. 2014;113(24). doi:10.1103/PhysRevLett.113.243601","ieee":"F. Fratini et al., “Fabry-Perot interferometer with quantum mirrors: Nonlinear light transport and rectification,” Physical Review Letters, vol. 113, no. 24. American Physical Society, 2014.","short":"F. Fratini, E. Mascarenhas, L. Safari, J. Poizat, D. Valente, A. Auffèves, D. Gerace, M. Santos, Physical Review Letters 113 (2014).","mla":"Fratini, Filippo, et al. “Fabry-Perot Interferometer with Quantum Mirrors: Nonlinear Light Transport and Rectification.” Physical Review Letters, vol. 113, no. 24, 243601, American Physical Society, 2014, doi:10.1103/PhysRevLett.113.243601."},"month":"12","intvolume":" 113","scopus_import":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1410.5972"}],"oa_version":"Submitted Version","abstract":[{"text":"Optical transport represents a natural route towards fast communications, and it is currently used in large scale data transfer. The progressive miniaturization of devices for information processing calls for the microscopic tailoring of light transport and confinement at length scales appropriate for upcoming technologies. With this goal in mind, we present a theoretical analysis of a one-dimensional Fabry-Perot interferometer built with two highly saturable nonlinear mirrors: a pair of two-level systems. Our approach captures nonlinear and nonreciprocal effects of light transport that were not reported previously. Remarkably, we show that such an elementary device can operate as a microscopic integrated optical rectifier.","lang":"eng"}],"issue":"24","volume":113,"ec_funded":1,"language":[{"iso":"eng"}],"publication_status":"published","status":"public","type":"journal_article","_id":"1995","department":[{"_id":"MiLe"}],"date_updated":"2021-01-12T06:54:34Z"}]