[{"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":"18","oa_version":"Published Version","publication_status":"published","abstract":[{"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.","lang":"eng"}],"ec_funded":1,"date_updated":"2023-09-07T13:16:42Z","status":"public","publication":"Molecular Physics","file":[{"checksum":"178964744b636a6f036372f4f090a657","date_created":"2019-01-29T08:32:57Z","file_id":"5896","date_updated":"2020-07-14T12:47:13Z","file_name":"2019_MolecularPhysics_Li.pdf","file_size":1309966,"access_level":"open_access","relation":"main_file","content_type":"application/pdf","creator":"dernst"}],"title":"Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon","external_id":{"isi":["000474641400008"]},"related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"8958"}]},"citation":{"mla":"Li, Xiang, et al. “Variational Approaches to Quantum Impurities: From the Fröhlich Polaron to the Angulon.” <i>Molecular Physics</i>, Taylor and Francis, 2019, doi:<a href=\"https://doi.org/10.1080/00268976.2019.1567852\">10.1080/00268976.2019.1567852</a>.","short":"X. Li, G. Bighin, E. Yakaboylu, M. Lemeshko, Molecular Physics (2019).","apa":"Li, X., Bighin, G., Yakaboylu, E., &#38; Lemeshko, M. (2019). Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. <i>Molecular Physics</i>. Taylor and Francis. <a href=\"https://doi.org/10.1080/00268976.2019.1567852\">https://doi.org/10.1080/00268976.2019.1567852</a>","ista":"Li X, Bighin G, Yakaboylu E, Lemeshko M. 2019. Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics.","ama":"Li X, Bighin G, Yakaboylu E, Lemeshko M. Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon. <i>Molecular Physics</i>. 2019. doi:<a href=\"https://doi.org/10.1080/00268976.2019.1567852\">10.1080/00268976.2019.1567852</a>","chicago":"Li, Xiang, Giacomo Bighin, Enderalp Yakaboylu, and Mikhail Lemeshko. “Variational Approaches to Quantum Impurities: From the Fröhlich Polaron to the Angulon.” <i>Molecular Physics</i>. Taylor and Francis, 2019. <a href=\"https://doi.org/10.1080/00268976.2019.1567852\">https://doi.org/10.1080/00268976.2019.1567852</a>.","ieee":"X. Li, G. Bighin, E. Yakaboylu, and M. Lemeshko, “Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon,” <i>Molecular Physics</i>. Taylor and Francis, 2019."},"project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF","grant_number":"P29902"},{"grant_number":"291734","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme"}],"scopus_import":"1","has_accepted_license":"1","author":[{"last_name":"Li","id":"4B7E523C-F248-11E8-B48F-1D18A9856A87","first_name":"Xiang","full_name":"Li, Xiang"},{"first_name":"Giacomo","full_name":"Bighin, Giacomo","last_name":"Bighin","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8823-9777"},{"first_name":"Enderalp","full_name":"Yakaboylu, Enderalp","orcid":"0000-0001-5973-0874","last_name":"Yakaboylu","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Lemeshko, Mikhail","first_name":"Mikhail","orcid":"0000-0002-6990-7802","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","last_name":"Lemeshko"}],"_id":"5886","oa":1,"date_published":"2019-01-18T00:00:00Z","doi":"10.1080/00268976.2019.1567852","language":[{"iso":"eng"}],"year":"2019","publisher":"Taylor and Francis","type":"journal_article","month":"01","publication_identifier":{"issn":["00268976"]},"quality_controlled":"1","isi":1,"date_created":"2019-01-27T22:59:10Z","department":[{"_id":"MiLe"}],"file_date_updated":"2020-07-14T12:47:13Z","ddc":["530"],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_processing_charge":"No"}]