Exact results for heavy unitary Bose polarons
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866916391477575680 |
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| author | Yegovtsev, Nikolay Astrakharchik, Grigori E. Massignan, Pietro Gurarie, Victor |
| author_facet | Yegovtsev, Nikolay Astrakharchik, Grigori E. Massignan, Pietro Gurarie, Victor |
| contents | We consider the problem of unitary Bose polarons, i.e., impurities interacting via a potential with infinite scattering length with a bath of weakly interacting bosons. We provide an analytic expression for the energy of a heavy impurity whose interaction potential has a range larger than the healing length of the bath. Furthermore, we perform numerically exact Diffusion Monte Carlo calculations and we demonstrate that the simple Gross-Pitaevskii theory provides a remarkably accurate description of heavy unitary Bose polarons throughout the whole experimentally relevant range of gas densities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_14313 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Exact results for heavy unitary Bose polarons Yegovtsev, Nikolay Astrakharchik, Grigori E. Massignan, Pietro Gurarie, Victor Quantum Gases We consider the problem of unitary Bose polarons, i.e., impurities interacting via a potential with infinite scattering length with a bath of weakly interacting bosons. We provide an analytic expression for the energy of a heavy impurity whose interaction potential has a range larger than the healing length of the bath. Furthermore, we perform numerically exact Diffusion Monte Carlo calculations and we demonstrate that the simple Gross-Pitaevskii theory provides a remarkably accurate description of heavy unitary Bose polarons throughout the whole experimentally relevant range of gas densities. |
| title | Exact results for heavy unitary Bose polarons |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2311.14313 |