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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/1412.1974 |
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| _version_ | 1866916328866054144 |
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| author | Gao, Chao Endo, Shimpei Castin, Yvan |
| author_facet | Gao, Chao Endo, Shimpei Castin, Yvan |
| contents | We consider a mixture of two single-spin-state fermions with an interaction of negligible range and infinite $s$-wave scattering length. By varying the mass ratio $α$ across $α_c\simeq 13.6069$ one can switch on-and-off the Efimov effect. We determine analytically the third cluster coefficient of the gas. We show that it is a smooth function of $α$ across $α_c$ since, unexpectedly, the three-body parameter characterizing the interaction is relevant even on the non-Efimovian side $α<α_c$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1412_1974 |
| institution | arXiv |
| publishDate | 2014 |
| record_format | arxiv |
| spellingShingle | The third virial coefficient of a two-component unitary Fermi gas across an Efimov-effect threshold Gao, Chao Endo, Shimpei Castin, Yvan Quantum Gases We consider a mixture of two single-spin-state fermions with an interaction of negligible range and infinite $s$-wave scattering length. By varying the mass ratio $α$ across $α_c\simeq 13.6069$ one can switch on-and-off the Efimov effect. We determine analytically the third cluster coefficient of the gas. We show that it is a smooth function of $α$ across $α_c$ since, unexpectedly, the three-body parameter characterizing the interaction is relevant even on the non-Efimovian side $α<α_c$. |
| title | The third virial coefficient of a two-component unitary Fermi gas across an Efimov-effect threshold |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/1412.1974 |