Polarons in supersolids: path-integral treatment of an impurity in a one-dimensional dipolar supersolid
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913711862579200 |
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| author | Simons, Laurent H. A. Wouters, Michiel Tempere, Jacques |
| author_facet | Simons, Laurent H. A. Wouters, Michiel Tempere, Jacques |
| contents | The supersolid phase of a dipolar Bose-Einstein condensate has an intriguing excitation spectrum displaying a band structure. Here, the dressing of an impurity in a one-dimensional dipolar supersolid with the excitations of the supersolid is studied. The ground-state energy of the supersolid polaron is calculated using a variational path integral approach, which obtained accurate results for other polaron systems within the Bogoliubov and Fröhlich approximations. A divergence is observed at the superfluid-supersolid phase transition. The polaron radius is also computed, showing that as a function of impurity-atom interactions, the polaron can become localized to a single droplet, behaving like a small solid-state polaron. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_03505 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Polarons in supersolids: path-integral treatment of an impurity in a one-dimensional dipolar supersolid Simons, Laurent H. A. Wouters, Michiel Tempere, Jacques Quantum Gases The supersolid phase of a dipolar Bose-Einstein condensate has an intriguing excitation spectrum displaying a band structure. Here, the dressing of an impurity in a one-dimensional dipolar supersolid with the excitations of the supersolid is studied. The ground-state energy of the supersolid polaron is calculated using a variational path integral approach, which obtained accurate results for other polaron systems within the Bogoliubov and Fröhlich approximations. A divergence is observed at the superfluid-supersolid phase transition. The polaron radius is also computed, showing that as a function of impurity-atom interactions, the polaron can become localized to a single droplet, behaving like a small solid-state polaron. |
| title | Polarons in supersolids: path-integral treatment of an impurity in a one-dimensional dipolar supersolid |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2407.03505 |