Temperature and finite-size effects in collective modes of superfluid Fermi gases
arXiv:cond-mat/0507714 · doi:10.1103/PhysRevA.72.043617
Abstract
We study the effects of superfluidity on the monopole and quadrupole collective excitations of a dilute ultra-cold Fermi gas with an attractive interatomic interaction. The system is treated fully microscopically within the Bogoliubov-de Gennes and quasiparticle random-phase approximation methods. The dependence on the temperature and on the trap frequency is analyzed and systematic comparisons with the corresponding hydrodynamic predictions are presented in order to study the limits of validity of the semiclassical approach.
arXiv comment9 pages, 4 figures
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- Collective excitations of a trapped Fermi gas at finite temperature
- Pure Goldstone mode in the quench dynamics of a confined ultracold Fermi gas in the BCS-BEC crossover regime
- Quench dynamics of a confined ultracold Fermi gas: Direct visibility of the Goldstone mode in the single-particle excitations
- Coupling of hydrodynamics and quasiparticle motion in collective modes of superfluid trapped Fermi gases
- Radial quadrupole and scissors modes in trapped Fermi gases across the BCS phase transition
- Superfluid density in linear response theory : pulsar glitches from the inner crust of neutron stars
- Superfluid fraction in the slab phase of the inner crust of neutron stars
- Density response of a trapped Fermi gas: a crossover from the pair vibration mode to the Goldstone mode
- Collective Modes in the Superfluid Inner Crust of Neutron Stars
- Pairing correlations of cold fermionic gases at overflow from a narrow to a wide harmonic trap
- Superfluid fraction in the rod phase of the inner crust of neutron stars
- Coupled oscillator model of a trapped Fermi gas at the BEC-BCS crossover
- Small amplitude collective modes of a finite-size unitary Fermi gas in deformed traps