Dissipative Superfluidity in a Molecular Bose-Einstein Condensate
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915555135455232 |
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| author | Li, Hongchao Yu, Xie-Hang Nakagawa, Masaya Ueda, Masahito |
| author_facet | Li, Hongchao Yu, Xie-Hang Nakagawa, Masaya Ueda, Masahito |
| contents | Motivated by recent experimental realization of a Bose-Einstein condensate (BEC) of dipolar molecules, we develop superfluid transport theory for a dissipative BEC to show that a weak uniform two-body loss can induce phase rigidity, leading to superfluid transport of bosons even without repulsive interparticle interactions. A generalized $f$-sum rule is shown to hold for a dissipative superfluid as a consequence of weak U(1) symmetry. We also demonstrate that dissipation enhances the stability of a molecular BEC with dipolar interactions. Possible experimental signature of dissipative superfluidity are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_08868 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dissipative Superfluidity in a Molecular Bose-Einstein Condensate Li, Hongchao Yu, Xie-Hang Nakagawa, Masaya Ueda, Masahito Quantum Gases Motivated by recent experimental realization of a Bose-Einstein condensate (BEC) of dipolar molecules, we develop superfluid transport theory for a dissipative BEC to show that a weak uniform two-body loss can induce phase rigidity, leading to superfluid transport of bosons even without repulsive interparticle interactions. A generalized $f$-sum rule is shown to hold for a dissipative superfluid as a consequence of weak U(1) symmetry. We also demonstrate that dissipation enhances the stability of a molecular BEC with dipolar interactions. Possible experimental signature of dissipative superfluidity are discussed. |
| title | Dissipative Superfluidity in a Molecular Bose-Einstein Condensate |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2406.08868 |