The physics of quantum degenerate atomic Fermi gases in uniform as well as in
harmonically trapped configurations is reviewed from a theoretical perspective. Emphasis is …

We briefly review the research on second sound in ultracold atomic physics, with emphasis
on strongly interacting unitary Fermi gases with infinitely large s-wave scattering length …

We provide a joint theoretical and experimental investigation of the temperature
dependence of the collective oscillations of first sound nature exhibited by a highly …

Using a variational approach, we solve the equations of two-fluid hydrodynamics for a
uniform and trapped Fermi gas at unitarity. In the uniform case, we find that the first and …

We consider a Fermi gas at unitarity trapped by a highly elongated harmonic potential and
solve the equations of two fluid hydrodynamics at finite temperature. The propagation of …

We investigate the linear and nonlinear sound propagations in a cigar-shaped superfluid
Fermi gas with a large particle number. We first solve analytically the eigenvalue problem of …

We present the results of a variational calculation of the frequencies of the low-lying Landau
two-fluid hydrodynamic modes in a trapped Fermi superfluid gas at unitarity. Landau's two …

We report on experimental investigations of longitudinal collective oscillations in a highly
elongated, harmonically trapped two-component Fermi gas with resonantly tuned s-wave …

We study sound propagation in a uniform superfluid gas of Fermi atoms in the unitary limit.
The existence of normal and superfluid components leads to appearance of two sound …

We investigate the propagation of density and temperature waves in a cylindrically trapped
gas with radial harmonic confinement. Starting from two-fluid hydrodynamic theory we derive …