Landau Damping in a Mixture of Bose and Fermi Superfluids

Abstract

We study the Landau damping in Bose-Fermi superfluid mixture at finite temperature. We find that at low temperature, the Landau damping rate will be exponentially suppressed at both the BCS side and the BEC side of Fermi superfluid. The momentum dependence of the damping rate is obtained, and it is quite different from the BCS side to the BEC side. The relations between our result and collective mode experiment in the recently realized Bose-Fermi superfluid mixture are also discussed.

8 pages, 3 figures

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Cited by in corpus (7)

• Critical Velocity and Dissipation of an ultracold Bose-Fermi Counterflow
• Low-momentum dynamic structure factor of a strongly interacting Fermi gas at finite temperature: The Goldstone phonon and its Landau damping
• Breathing Mode of a Bose-Einstein Condensate Immersed in a Fermi Sea
• Beliaev Damping in Spin-$\frac{1}{2}$ Interacting Bosons with Spin-Orbit Coupling
• Vortex Lattices in the Bose-Fermi Superfluid Mixture
• Dipole oscillation of a trapped Bose--Fermi-mixture gas in collisionless and hydrodynamic regimes
• Damping of the Anderson-Bogolyubov mode by spin and mass imbalance in Fermi mixtures