{"date_updated":"2024-02-18T12:34:22Z","language":[{"iso":"eng"}],"publication":"arXiv:2311.05361","abstract":[{"lang":"eng","text":"In the Bogoliubov-Fr\\\"ohlich model, we prove that an impurity immersed in a\r\nBose-Einstein condensate forms a stable quasi-particle when the total momentum\r\nis less than its mass times the speed of sound. The system thus exhibits\r\nsuperfluid behavior, as this quasi-particle does not experience friction. We do\r\nnot assume any infrared or ultraviolet regularization of the model, which\r\ncontains massless excitations and point-like interactions."}],"title":"A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate","author":[{"first_name":"Benjamin","id":"99427","last_name":"Hinrichs","full_name":"Hinrichs, Benjamin","orcid":"0000-0001-9074-1205"},{"full_name":"Lampart, Jonas","last_name":"Lampart","first_name":"Jonas"}],"year":"2023","user_id":"99427","_id":"51376","status":"public","date_created":"2024-02-18T12:33:48Z","external_id":{"arxiv":["2311.05361"]},"department":[{"_id":"799"}],"project":[{"name":"PhoQC: PhoQC: Photonisches Quantencomputing","grant_number":"PROFILNRW-2020-067","_id":"266"}],"citation":{"short":"B. Hinrichs, J. Lampart, ArXiv:2311.05361 (2023).","ama":"Hinrichs B, Lampart J. A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate. <i>arXiv:231105361</i>. Published online 2023.","ieee":"B. Hinrichs and J. Lampart, “A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate,” <i>arXiv:2311.05361</i>. 2023.","bibtex":"@article{Hinrichs_Lampart_2023, title={A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate}, journal={arXiv:2311.05361}, author={Hinrichs, Benjamin and Lampart, Jonas}, year={2023} }","chicago":"Hinrichs, Benjamin, and Jonas Lampart. “A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate.” <i>ArXiv:2311.05361</i>, 2023.","mla":"Hinrichs, Benjamin, and Jonas Lampart. “A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate.” <i>ArXiv:2311.05361</i>, 2023.","apa":"Hinrichs, B., &#38; Lampart, J. (2023). A Lower Bound on the Critical Momentum of an Impurity in a Bose-Einstein  Condensate. In <i>arXiv:2311.05361</i>."},"type":"preprint"}