Generation and decay of Higgs mode in a strongly interacting Fermi gas
arXiv:2303.13394 · doi:10.1038/s41598-023-38176-9
Abstract
We investigate the life cycle of the large amplitude Higgs mode in strongly interacting superfluid Fermi gas. Through numerical simulations with time-dependent density-functional theory and the technique of the interaction quench, we verify the previous theoretical predictions on the mode's frequency. Next, we demonstrate that the mode is dynamically unstable against external perturbation and qualitatively examine the emerging state after the mode decays. The post-decay state is characterized by spatial fluctuations of the order parameter and density at scales comparable to the superfluid coherence length scale. We identify similarities with FFLO states, which become more prominent at higher dimensionalities and nonzero spin imbalances.
Ancillary files contain reproducibility packs of numerical calculations
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Cited by in corpus (6)
- Exciting the Higgs mode in a strongly-interacting Fermi gas by interaction modulation
- Quench-induced spontaneous currents in rings of ultracold fermionic atoms
- Chirped amplitude mode in photo-excited superconductors
- Time-dependent nuclear energy-density functional theory toolkit for neutron star crust: Dynamics of a nucleus in a neutron superfluid
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- Spectrum of density, spin and pairing fluctuations of an attractive two-dimensional Fermi gas