Anisotropic acoustics in dipolar Fermi gases

Author
Abstract

We consider plane wave modes in ultracold, but not quantum degenerate, dipolar Fermi gases in the hydrodynamic limit. Longitudinal waves present anisotropies in both the speed of sound and their damping, and experience a small, undulatory effect in their flow velocity. Two distinct types of shear waves appear, a ``familiar" one, and another that is accompanied by nontrivial density and temperature modulations. We propose these shear modes as an experimental means to measure the viscosity coefficients, including their anisotropies.

Year of Publication
2023
Date Published
2023-03
Journal Title
Physical Review A
Volume
107
Start Page or Article ID (correct)
033321
DOI
URL
JILA PI
Journal Article
JILA Topics
Publication Status