Functional renormalisation group approach to the finite-temperature Bose polaron
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866913654805364736 |
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| author | Isaule, Felipe |
| author_facet | Isaule, Felipe |
| contents | The functional renormalisation group (FRG) approach is employed to study Bose polarons at finite temperatures in the regime of strong attractive bath-impurity interactions. Both two- and three-dimensional configurations are considered. The appearance of two polaron quasiparticle branches at finite temperatures is revealed, consistent with recent findings by other analytical techniques. Ground-state polaron energies are also reported for selected interactions and temperatures within the gas superfluid phase. The findings of this work present the FRG as a useful tool for studying finite-temperature polarons in quantum gases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_04197 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Functional renormalisation group approach to the finite-temperature Bose polaron Isaule, Felipe Quantum Gases The functional renormalisation group (FRG) approach is employed to study Bose polarons at finite temperatures in the regime of strong attractive bath-impurity interactions. Both two- and three-dimensional configurations are considered. The appearance of two polaron quasiparticle branches at finite temperatures is revealed, consistent with recent findings by other analytical techniques. Ground-state polaron energies are also reported for selected interactions and temperatures within the gas superfluid phase. The findings of this work present the FRG as a useful tool for studying finite-temperature polarons in quantum gases. |
| title | Functional renormalisation group approach to the finite-temperature Bose polaron |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2402.04197 |