Evolution of a single spin in ideal Bose gas at finite temperatures
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866913120596787200 |
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| author | Hryhorchak, O. Panochko, G. Pastukhov, V. |
| author_facet | Hryhorchak, O. Panochko, G. Pastukhov, V. |
| contents | We study the finite-temperature dynamics of non-interacting bosons with a single static spinful impurity immersed. A non-zero contact boson-impurity pairwise interaction is assumed only for the spin-up impurity state. By tracing out bosonic degrees of freedom, the exact time evolution of the impurity spin is calculated for pure and mixed initial ensembles of states. The time-dependent momentum distribution of bosons initially created in the Bose-condensed state and driven by the interaction with spin is analyzed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09619 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evolution of a single spin in ideal Bose gas at finite temperatures Hryhorchak, O. Panochko, G. Pastukhov, V. Quantum Gases Quantum Physics We study the finite-temperature dynamics of non-interacting bosons with a single static spinful impurity immersed. A non-zero contact boson-impurity pairwise interaction is assumed only for the spin-up impurity state. By tracing out bosonic degrees of freedom, the exact time evolution of the impurity spin is calculated for pure and mixed initial ensembles of states. The time-dependent momentum distribution of bosons initially created in the Bose-condensed state and driven by the interaction with spin is analyzed. |
| title | Evolution of a single spin in ideal Bose gas at finite temperatures |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2504.09619 |