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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2401.14822 |
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| _version_ | 1866909347118841856 |
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| author | Kell, Andreas Breyer, Moritz Eberz, Daniel Köhl, Michael |
| author_facet | Kell, Andreas Breyer, Moritz Eberz, Daniel Köhl, Michael |
| contents | We study the Higgs mode of a strongly-interacting Fermi gas in the crossover regime between a fermionic and bosonic superfluid. By periodically modulating the interaction strength of the gas, we parametrically excite the Higgs mode and study its resonance frequency and line width as a function of both interaction strength and temperature. We find that the resonance frequency at low temperature agrees with a local-density approximation of the pairing gap. Both frequency and line width do not exhibit a pronounced variation with temperature, which is theoretically unexpected, however, in qualitative agreement with a different recent study. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_14822 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exciting the Higgs mode in a strongly-interacting Fermi gas by interaction modulation Kell, Andreas Breyer, Moritz Eberz, Daniel Köhl, Michael Quantum Gases We study the Higgs mode of a strongly-interacting Fermi gas in the crossover regime between a fermionic and bosonic superfluid. By periodically modulating the interaction strength of the gas, we parametrically excite the Higgs mode and study its resonance frequency and line width as a function of both interaction strength and temperature. We find that the resonance frequency at low temperature agrees with a local-density approximation of the pairing gap. Both frequency and line width do not exhibit a pronounced variation with temperature, which is theoretically unexpected, however, in qualitative agreement with a different recent study. |
| title | Exciting the Higgs mode in a strongly-interacting Fermi gas by interaction modulation |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2401.14822 |