Finite-temperature properties of low-dimensional bosons with three-body interaction
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866908939305615360 |
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| author | Polkanov, V. Pastukhov, V. |
| author_facet | Polkanov, V. Pastukhov, V. |
| contents | We discuss the finite-temperature properties of low-dimensional bosons with three-body interactions described by a Feshbach-resonance-like two-channel model. In particular, by using the approximate consideration that collects ring-like Feynman diagrams for the grand potential and resembles the three-body $t$-matrix approximation, we have computed the third virial coefficient, an equation of state, and the temperature depletion of the average number of closed-channel trimers. The calculated heat capacity demonstrates a non-monotonic temperature behavior, which is unusual for a low-dimensional Bose gas. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_04114 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Finite-temperature properties of low-dimensional bosons with three-body interaction Polkanov, V. Pastukhov, V. Quantum Gases We discuss the finite-temperature properties of low-dimensional bosons with three-body interactions described by a Feshbach-resonance-like two-channel model. In particular, by using the approximate consideration that collects ring-like Feynman diagrams for the grand potential and resembles the three-body $t$-matrix approximation, we have computed the third virial coefficient, an equation of state, and the temperature depletion of the average number of closed-channel trimers. The calculated heat capacity demonstrates a non-monotonic temperature behavior, which is unusual for a low-dimensional Bose gas. |
| title | Finite-temperature properties of low-dimensional bosons with three-body interaction |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2604.04114 |