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| Verfasst von: | Enss, Tilman [VerfasserIn]  |
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| | Tran, Binh [VerfasserIn] |
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| | Rautenberg, Michael [VerfasserIn] |
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| | Gerken, Manuel [VerfasserIn] |
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| | Lippi, Eleonora [VerfasserIn] |
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| | Drescher, Moritz [VerfasserIn] |
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| | Zhu, Bing [VerfasserIn] |
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| | Weidemüller, Matthias [VerfasserIn] |
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| | Salmhofer, Manfred [VerfasserIn] |
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| Titel: | Scattering of two heavy Fermi polarons |
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| Titelzusatz: | resonances and quasibound states |
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| Verf.angabe: | Tilman Enss, Binh Tran, Michael Rautenberg, Manuel Gerken, Eleonora Lippi, Moritz Drescher, Bing Zhu, Matthias Weidemüller, and Manfred Salmhofer |
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| E-Jahr: | 2020 |
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| Jahr: | 17 December 2020 |
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| Umfang: | 7 S. |
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| Fussnoten: | Gesehen am 14.10.2021 |
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| Titel Quelle: | Enthalten in: Physical review |
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| Ort Quelle: | Woodbury, NY : Inst., 2016 |
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| Jahr Quelle: | 2020 |
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| Band/Heft Quelle: | 102(2020), 6, Artikel-ID 063321, Seite 1-7 |
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| ISSN Quelle: | 2469-9934 |
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| Abstract: | Impurities in a Fermi sea, or Fermi polarons, experience a Casimir interaction induced by quantum fluctuations of the medium. When there is short-range attraction between impurities and fermions, also the induced interaction between two impurities is strongly attractive at short distance and oscillates in space for larger distances. We theoretically investigate the scattering properties and compute the scattering phase shifts and scattering lengths between two heavy impurities in an ideal Fermi gas at zero temperature. While the induced interaction between impurities is weakly attractive for weak impurity-medium interactions, we find that impurities strongly and attractively interacting with the medium exhibit resonances in the induced scattering with a sign change of the induced scattering length and even strong repulsion. These resonances occur whenever a three-body Efimov bound state appears at the continuum threshold. At energies above the continuum threshold, we find that the Efimov state in medium can turn into a quasibound state with a finite decay width. |
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| DOI: | doi:10.1103/PhysRevA.102.063321 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1103/PhysRevA.102.063321 |
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| | Volltext: https://link.aps.org/doi/10.1103/PhysRevA.102.063321 |
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| | DOI: https://doi.org/10.1103/PhysRevA.102.063321 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1773865986 |
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| Verknüpfungen: | → Zeitschrift |
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Scattering of two heavy Fermi polarons / Enss, Tilman [VerfasserIn]; 17 December 2020 (Online-Ressource)
