Efimov three-body states on top of a Fermi sea
The stabilization of Cooper pairs of bound electrons in the background of a Fermi sea is the origin of superconductivity and the paradigmatic example of the striking influence of many-body physics on few-body properties. In the quantum-mechanical three-body problem the famous Efimov effect yields un...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/2/023026 |
| _version_ | 1797751534470037504 |
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| author | Nicolai Gayle Nygaard Nikolaj Thomas Zinner |
| author_facet | Nicolai Gayle Nygaard Nikolaj Thomas Zinner |
| author_sort | Nicolai Gayle Nygaard |
| collection | DOAJ |
| description | The stabilization of Cooper pairs of bound electrons in the background of a Fermi sea is the origin of superconductivity and the paradigmatic example of the striking influence of many-body physics on few-body properties. In the quantum-mechanical three-body problem the famous Efimov effect yields unexpected scaling relations among a tower of universal states. These seemingly unrelated problems can now be studied in the same setup thanks to the success of ultracold atomic gas experiments. In light of the tremendous effect of a background Fermi sea on two-body properties, a natural question is whether a background can modify or even destroy the Efimov effect. Here we demonstrate how the generic problem of three interacting particles changes when one particle is embedded in a background Fermi sea, and show that Efimov scaling persists. It is found in a scaling that relates the three-body physics to the background density of fermionic particles. |
| first_indexed | 2024-03-12T16:50:56Z |
| format | Article |
| id | doaj.art-bd40c21d69fa4f389e67b9952a719e60 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:50:56Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-bd40c21d69fa4f389e67b9952a719e602023-08-08T11:21:33ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116202302610.1088/1367-2630/16/2/023026Efimov three-body states on top of a Fermi seaNicolai Gayle Nygaard0Nikolaj Thomas Zinner1Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University , DK-8000 Aarhus C, DenmarkLundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University , DK-8000 Aarhus C, DenmarkThe stabilization of Cooper pairs of bound electrons in the background of a Fermi sea is the origin of superconductivity and the paradigmatic example of the striking influence of many-body physics on few-body properties. In the quantum-mechanical three-body problem the famous Efimov effect yields unexpected scaling relations among a tower of universal states. These seemingly unrelated problems can now be studied in the same setup thanks to the success of ultracold atomic gas experiments. In light of the tremendous effect of a background Fermi sea on two-body properties, a natural question is whether a background can modify or even destroy the Efimov effect. Here we demonstrate how the generic problem of three interacting particles changes when one particle is embedded in a background Fermi sea, and show that Efimov scaling persists. It is found in a scaling that relates the three-body physics to the background density of fermionic particles.https://doi.org/10.1088/1367-2630/16/2/023026few-body physicsEfimov effectFermi seamany-body effectscold atoms03.65.Ge |
| spellingShingle | Nicolai Gayle Nygaard Nikolaj Thomas Zinner Efimov three-body states on top of a Fermi sea New Journal of Physics few-body physics Efimov effect Fermi sea many-body effects cold atoms 03.65.Ge |
| title | Efimov three-body states on top of a Fermi sea |
| title_full | Efimov three-body states on top of a Fermi sea |
| title_fullStr | Efimov three-body states on top of a Fermi sea |
| title_full_unstemmed | Efimov three-body states on top of a Fermi sea |
| title_short | Efimov three-body states on top of a Fermi sea |
| title_sort | efimov three body states on top of a fermi sea |
| topic | few-body physics Efimov effect Fermi sea many-body effects cold atoms 03.65.Ge |
| url | https://doi.org/10.1088/1367-2630/16/2/023026 |
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