Frequency and damping of the Scissors Mode of a Fermi gas

Abstract

We calculate the frequency and damping of the scissors mode in a classical gas as a function of temperature and coupling strength. Our results show good agreement with the main features observed in recent measurements of the scissors mode in an ultracold gas of ${}^6$Li atoms. The comparison between theory and experiment involves no fitting parameters and thus allows an identification of non-classical effects at and near the unitarity limit.

4 pages, 2 figures

References in corpus (2)

• Collective excitations of a degenerate gas at the BEC-BCS crossover
• Shear viscosity and damping for a Fermi gas in the unitarity limit

Cited by in corpus (12)

• Collective oscillations of a Fermi gas in the unitarity limit: Temperature effects and the role of pair correlations
• Fluid Dynamics and Viscosity in Strongly Correlated Fluids
• Hydrodynamic fluctuations and the minimum shear viscosity of the dilute Fermi gas at unitarity
• Collective modes of trapped Fermi gases with in-medium interaction
• Finite temperature damping of collective modes of a BCS-BEC crossover superfluid
• Numerical solution of the Boltzmann equation for trapped Fermi gases with in-medium effects
• Radial quadrupole and scissors modes in trapped Fermi gases across the BCS phase transition
• Medium effects and the shear viscosity of the dilute Fermi gas away from the conformal limit
• Second order fluid dynamics for the unitary Fermi gas from kinetic theory
• Dynamic Structure Factor of Normal Fermi Gas from Collisionless to Hydrodynamic Regime
• Feshbach Resonances and Medium Effects in ultracold atomic Gases
• Higher-Harmonic Collective Modes in a Trapped Gas from Second-Order Hydrodynamics