[{"oa":1,"article_type":"letter_note","oa_version":"Published Version","ec_funded":1,"_id":"21373","project":[{"call_identifier":"H2020","grant_number":"801770","_id":"2688CF98-B435-11E9-9278-68D0E5697425","name":"Angulon: physics and applications of a new quasiparticle"},{"name":"Polarons in Lead Halide Perovskites","_id":"8fa7db46-16d5-11f0-9cad-917600954daf","grant_number":"12078"}],"department":[{"_id":"MiLe"}],"PlanS_conform":"1","abstract":[{"lang":"eng","text":"Cold atom experiments show that a mobile impurity particle immersed in a weakly interacting Bose-Einstein condensate forms a well-defined quasiparticle (Bose polaron) for weak to moderate impurity-boson interaction strengths, whereas a significant line broadening is consistently observed for strong interactions. Motivated by this, we introduce a phenomenological theory based on the assumption that the most relevant states are characterized by the impurity correlated with at most one boson, since they have the largest overlap with the uncorrelated states to which the most common experimental probes couple. These experimentally relevant states can, however, decay to lower energy states characterized by correlations involving multiple bosons, and we model this using a minimal variational wave function combined with a complex impurity-boson interaction strength. We first motivate this approach by comparing to a more elaborate theory that includes correlations with up to two bosons. Our phenomenological model is shown to recover the main results of two recent experiments probing both the spectral and the nonequilibrium properties of the Bose polaron. Our work offers an intuitive framework for analyzing experimental data and highlights the importance of understanding the complicated problem of the Bose polaron decay in a many-body setting."}],"author":[{"last_name":"Al Hyder","first_name":"Ragheed","id":"d1c405be-ae15-11ed-8510-ccf53278162e","full_name":"Al Hyder, Ragheed"},{"first_name":"G. M.","last_name":"Bruun","full_name":"Bruun, G. M."},{"full_name":"Pohl, T.","first_name":"T.","last_name":"Pohl"},{"last_name":"Lemeshko","first_name":"Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","full_name":"Lemeshko, Mikhail","orcid":"0000-0002-6990-7802"},{"orcid":"0000-0003-0393-5525","full_name":"Volosniev, Artem","id":"37D278BC-F248-11E8-B48F-1D18A9856A87","first_name":"Artem","last_name":"Volosniev"}],"external_id":{"arxiv":["2507.04143"]},"file_date_updated":"2026-03-02T09:24:44Z","date_updated":"2026-03-02T09:27:26Z","publication_status":"published","year":"2026","volume":8,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","file":[{"success":1,"creator":"dernst","checksum":"172720f1f0c5c9d06a282e52023a0030","date_created":"2026-03-02T09:24:44Z","access_level":"open_access","file_size":16789781,"date_updated":"2026-03-02T09:24:44Z","relation":"main_file","file_id":"21376","content_type":"application/pdf","file_name":"2026_JPhysPhotonics_Volpe.pdf"}],"date_published":"2026-02-06T00:00:00Z","citation":{"apa":"Al Hyder, R., Bruun, G. M., Pohl, T., Lemeshko, M., &#38; Volosniev, A. (2026). Phenomenological model of decaying Bose polarons. <i>Physical Review Research</i>. American Physical Society. <a href=\"https://doi.org/10.1103/16dk-5dgx\">https://doi.org/10.1103/16dk-5dgx</a>","ista":"Al Hyder R, Bruun GM, Pohl T, Lemeshko M, Volosniev A. 2026. Phenomenological model of decaying Bose polarons. Physical Review Research. 8, L012034.","short":"R. Al Hyder, G.M. Bruun, T. Pohl, M. Lemeshko, A. Volosniev, Physical Review Research 8 (2026).","ama":"Al Hyder R, Bruun GM, Pohl T, Lemeshko M, Volosniev A. Phenomenological model of decaying Bose polarons. <i>Physical Review Research</i>. 2026;8. doi:<a href=\"https://doi.org/10.1103/16dk-5dgx\">10.1103/16dk-5dgx</a>","chicago":"Al Hyder, Ragheed, G. M. Bruun, T. Pohl, Mikhail Lemeshko, and Artem Volosniev. “Phenomenological Model of Decaying Bose Polarons.” <i>Physical Review Research</i>. American Physical Society, 2026. <a href=\"https://doi.org/10.1103/16dk-5dgx\">https://doi.org/10.1103/16dk-5dgx</a>.","ieee":"R. Al Hyder, G. M. Bruun, T. Pohl, M. Lemeshko, and A. Volosniev, “Phenomenological model of decaying Bose polarons,” <i>Physical Review Research</i>, vol. 8. American Physical Society, 2026.","mla":"Al Hyder, Ragheed, et al. “Phenomenological Model of Decaying Bose Polarons.” <i>Physical Review Research</i>, vol. 8, L012034, American Physical Society, 2026, doi:<a href=\"https://doi.org/10.1103/16dk-5dgx\">10.1103/16dk-5dgx</a>."},"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"article_number":"L012034","intvolume":"         8","license":"https://creativecommons.org/licenses/by/4.0/","month":"02","language":[{"iso":"eng"}],"publisher":"American Physical Society","OA_place":"publisher","article_processing_charge":"No","quality_controlled":"1","publication":"Physical Review Research","ddc":["530"],"corr_author":"1","scopus_import":"1","publication_identifier":{"issn":["2643-1564"]},"OA_type":"gold","title":"Phenomenological model of decaying Bose polarons","day":"06","type":"journal_article","DOAJ_listed":"1","acknowledgement":"We thank Georgios Koutentakis, Frédéric Chevy, Hussam Al Daas, and Richard Schmidt for fruitful discussions; Jan Arlt for sharing their experimental data and many fruitful discussions; and Christoph Eigen for sharing their experimental data and inspiring discussions. R.A., T.P., and G.M.B. have been supported in part by the Danish National Research Foundation through the Center of Excellence “CCQ” (Grant Agreement No. DNRF156) and the Independent Research Fund Denmark–Natural Sciences via Grant No. DFF-8021-00233B. R.A., A.G.V., and M.L. acknowledge support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). R.A. received funding from the Austrian Academy of Science ÖAW Grant No. PR1029OEAW03.","doi":"10.1103/16dk-5dgx","date_created":"2026-03-01T23:01:39Z","arxiv":1,"has_accepted_license":"1","status":"public"},{"corr_author":"1","ddc":["530"],"scopus_import":"1","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"OA_type":"hybrid","title":"Domain-wall ferroelectric polarons in a two-dimensional rotor lattice model","issue":"9","day":"07","type":"journal_article","acknowledgement":"We thank, in alphabetical order, Zhanybek Alpichshev, Cesare Franchini, Areg Ghazaryan, Sebastian Maehrlein, and Artem Volosniev for fruitful discussions and comments. G. M. K. received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101034413. R. A. received funding from the Austrian Academy of Science ÖWA Grant No. PR1029OEAW03. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON).","arxiv":1,"date_created":"2025-03-23T23:01:25Z","doi":"10.1103/PhysRevLett.134.096302","has_accepted_license":"1","status":"public","date_published":"2025-03-07T00:00:00Z","citation":{"short":"F. Kluibenschedl, G. Koutentakis, R. Al Hyder, M. Lemeshko, Physical Review Letters 134 (2025).","apa":"Kluibenschedl, F., Koutentakis, G., Al Hyder, R., &#38; Lemeshko, M. (2025). Domain-wall ferroelectric polarons in a two-dimensional rotor lattice model. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevLett.134.096302\">https://doi.org/10.1103/PhysRevLett.134.096302</a>","ista":"Kluibenschedl F, Koutentakis G, Al Hyder R, Lemeshko M. 2025. Domain-wall ferroelectric polarons in a two-dimensional rotor lattice model. Physical Review Letters. 134(9), 096302.","mla":"Kluibenschedl, Florian, et al. “Domain-Wall Ferroelectric Polarons in a Two-Dimensional Rotor Lattice Model.” <i>Physical Review Letters</i>, vol. 134, no. 9, 096302, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/PhysRevLett.134.096302\">10.1103/PhysRevLett.134.096302</a>.","ieee":"F. Kluibenschedl, G. Koutentakis, R. Al Hyder, and M. Lemeshko, “Domain-wall ferroelectric polarons in a two-dimensional rotor lattice model,” <i>Physical Review Letters</i>, vol. 134, no. 9. American Physical Society, 2025.","chicago":"Kluibenschedl, Florian, Georgios Koutentakis, Ragheed Al Hyder, and Mikhail Lemeshko. “Domain-Wall Ferroelectric Polarons in a Two-Dimensional Rotor Lattice Model.” <i>Physical Review Letters</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/PhysRevLett.134.096302\">https://doi.org/10.1103/PhysRevLett.134.096302</a>.","ama":"Kluibenschedl F, Koutentakis G, Al Hyder R, Lemeshko M. Domain-wall ferroelectric polarons in a two-dimensional rotor lattice model. <i>Physical Review Letters</i>. 2025;134(9). doi:<a href=\"https://doi.org/10.1103/PhysRevLett.134.096302\">10.1103/PhysRevLett.134.096302</a>"},"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"article_number":"096302","intvolume":"       134","pmid":1,"month":"03","language":[{"iso":"eng"}],"OA_place":"publisher","publisher":"American Physical Society","article_processing_charge":"Yes (via OA deal)","quality_controlled":"1","publication":"Physical Review Letters","file_date_updated":"2025-03-25T12:37:07Z","date_updated":"2025-09-30T11:17:58Z","publication_status":"published","volume":134,"year":"2025","isi":1,"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","file":[{"date_created":"2025-03-25T12:37:07Z","checksum":"1901efd7f95e8fe70cac412f91ea4da3","creator":"dernst","success":1,"access_level":"open_access","content_type":"application/pdf","file_id":"19461","relation":"main_file","date_updated":"2025-03-25T12:37:07Z","file_size":708750,"file_name":"2025_PhysReviewLetters_Kluibenschedl.pdf"}],"oa":1,"article_type":"original","oa_version":"Published Version","project":[{"_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","grant_number":"101034413","call_identifier":"H2020","name":"IST-BRIDGE: International postdoctoral program"},{"_id":"2688CF98-B435-11E9-9278-68D0E5697425","grant_number":"801770","call_identifier":"H2020","name":"Angulon: physics and applications of a new quasiparticle"},{"_id":"8fa7db46-16d5-11f0-9cad-917600954daf","grant_number":"12078","name":"Polarons in Lead Halide Perovskites"}],"_id":"19437","ec_funded":1,"department":[{"_id":"MiLe"}],"abstract":[{"text":"We demonstrate the formation of ferroelectric domain-wall polarons in a minimal two-dimensional lattice model of electrons interacting with rotating dipoles. Along the domain wall, the rotors polarize in opposite directions, causing the electron to localize along a particular lattice direction. The rotor-electron coupling is identified as the origin of a structural instability in the crystal that leads to the domain-wall formation via a symmetry-breaking process. Our results provide the first theoretical description of ferroelectric polarons, as discussed in the context of soft semiconductors.","lang":"eng"}],"author":[{"id":"7499e70e-eb2c-11ec-b98b-f925648bc9d9","full_name":"Kluibenschedl, Florian","last_name":"Kluibenschedl","first_name":"Florian"},{"first_name":"Georgios","last_name":"Koutentakis","full_name":"Koutentakis, Georgios","id":"d7b23d3a-9e21-11ec-b482-f76739596b95"},{"last_name":"Al Hyder","first_name":"Ragheed","id":"d1c405be-ae15-11ed-8510-ccf53278162e","full_name":"Al Hyder, Ragheed"},{"first_name":"Mikhail","last_name":"Lemeshko","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87"}],"external_id":{"isi":["001492808800010"],"arxiv":["2407.19993"],"pmid":["40131090"]}},{"publication":"The Journal of Chemical Physics","article_processing_charge":"Yes (via OA deal)","quality_controlled":"1","language":[{"iso":"eng"}],"OA_place":"publisher","publisher":"AIP Publishing","pmid":1,"month":"06","article_number":"234106","intvolume":"       162","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_published":"2025-06-21T00:00:00Z","citation":{"short":"R. Al Hyder, M. Lemeshko, A. Cappellaro, The Journal of Chemical Physics 162 (2025).","apa":"Al Hyder, R., Lemeshko, M., &#38; Cappellaro, A. (2025). Quantum transport in the presence of a chiral molecular potential. <i>The Journal of Chemical Physics</i>. AIP Publishing. <a href=\"https://doi.org/10.1063/5.0271155\">https://doi.org/10.1063/5.0271155</a>","ista":"Al Hyder R, Lemeshko M, Cappellaro A. 2025. Quantum transport in the presence of a chiral molecular potential. The Journal of Chemical Physics. 162(23), 234106.","mla":"Al Hyder, Ragheed, et al. “Quantum Transport in the Presence of a Chiral Molecular Potential.” <i>The Journal of Chemical Physics</i>, vol. 162, no. 23, 234106, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0271155\">10.1063/5.0271155</a>.","ama":"Al Hyder R, Lemeshko M, Cappellaro A. Quantum transport in the presence of a chiral molecular potential. <i>The Journal of Chemical Physics</i>. 2025;162(23). doi:<a href=\"https://doi.org/10.1063/5.0271155\">10.1063/5.0271155</a>","ieee":"R. Al Hyder, M. Lemeshko, and A. Cappellaro, “Quantum transport in the presence of a chiral molecular potential,” <i>The Journal of Chemical Physics</i>, vol. 162, no. 23. AIP Publishing, 2025.","chicago":"Al Hyder, Ragheed, Mikhail Lemeshko, and Alberto Cappellaro. “Quantum Transport in the Presence of a Chiral Molecular Potential.” <i>The Journal of Chemical Physics</i>. AIP Publishing, 2025. <a href=\"https://doi.org/10.1063/5.0271155\">https://doi.org/10.1063/5.0271155</a>."},"has_accepted_license":"1","status":"public","doi":"10.1063/5.0271155","arxiv":1,"date_created":"2025-06-23T13:55:28Z","acknowledgement":"We thank Artem Volosniev, Narcis Avarvari, Georgios Koutentakis, Sandro Wimberger, and Binghai Yan for useful discussions. R.A. received funding from the Austrian Academy of Science ÖWA, Grant No. PR1029OEAW03. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). A.C. received funding from the European Union’s Horizon Europe research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101062862-NeqMolRot.","type":"journal_article","day":"21","OA_type":"hybrid","issue":"23","title":"Quantum transport in the presence of a chiral molecular potential","corr_author":"1","ddc":["530"],"scopus_import":"1","publication_identifier":{"issn":["0021-9606"],"eissn":["1089-7690"]},"author":[{"id":"d1c405be-ae15-11ed-8510-ccf53278162e","full_name":"Al Hyder, Ragheed","last_name":"Al Hyder","first_name":"Ragheed"},{"orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","first_name":"Mikhail","last_name":"Lemeshko"},{"id":"9d13b3cb-30a2-11eb-80dc-f772505e8660","orcid":"0000-0001-6110-2359","full_name":"Cappellaro, Alberto","last_name":"Cappellaro","first_name":"Alberto"}],"external_id":{"isi":["001512872900010"],"arxiv":["2503.14124"],"pmid":["40526561"]},"abstract":[{"lang":"eng","text":"We investigate quantum transport in a two-dimensional electron system coupled to a chiral molecular potential, demonstrating how molecular chirality and orientation affect charge and spin transport properties. We propose a minimal model for realizing true chiral symmetry breaking on a magnetized surface, with a crucial role played by the tilt angle of the molecular dipole with respect to the surface. For non-zero tilting, we show that the Hall response exhibits clear signatures of chirality-induced effects, in both charge- and spin-resolved observables. Concerning the former, tilted enantiomers produce asymmetric Hall conductances and, even more remarkably, the persistence of this feature in the absence of spin–orbit coupling (SOC) signals how the enantiospecific charge response results from electron scattering off the molecular potential. Concerning spin-resolved observables where SOC plays a relevant role, we reveal that chiral symmetry breaking is crucial in enabling spin-flipping processes."}],"department":[{"_id":"MiLe"}],"ec_funded":1,"_id":"19880","project":[{"call_identifier":"H2020","grant_number":"801770","_id":"2688CF98-B435-11E9-9278-68D0E5697425","name":"Angulon: physics and applications of a new quasiparticle"},{"grant_number":"101062862","_id":"bd7b5202-d553-11ed-ba76-9b1c1b258338","name":"Non-Equilibrium Field Theory of Molecular Rotations"},{"_id":"8fa7db46-16d5-11f0-9cad-917600954daf","grant_number":"12078","name":"Polarons in Lead Halide Perovskites"}],"oa_version":"Published Version","article_type":"original","oa":1,"file":[{"file_name":"2025_JourChemicalPhysics_AlHyder.pdf","content_type":"application/pdf","file_id":"19881","relation":"main_file","file_size":7202681,"date_updated":"2025-06-23T14:03:30Z","access_level":"open_access","date_created":"2025-06-23T14:03:30Z","checksum":"e278631d949657baa9d5309dad5f4b77","creator":"dernst","success":1}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","isi":1,"year":"2025","volume":162,"publication_status":"published","date_updated":"2025-09-30T13:40:55Z","file_date_updated":"2025-06-23T14:03:30Z"}]