We develop the moment method for Bose-Einstein condensates at finite temperatures that
enable us to study collective sound modes from the hydrodynamic to the collisionless …

We study the transition from hydrodynamic to collisionless behavior in collective modes of
ultracold trapped Fermi gases. To that end, we solve the Boltzmann equation for the trapped …

Using the maximum entropy principle, a kinetic model equation is proposed to simplify the
intricate collision term in the semi-classical Boltzmann equation for dilute quantum gases in …

At low temperature, a normal gas of unpaired spin-1/2 fermions is one of the cleanest
realizations of a Fermi liquid. It is described by Landau's theory, where no …

We investigate collective excitations of density fluctuations and a dynamic density structure
factor in a mixture of Bose and Fermi gases in a normal phase. With decreasing …

Dipole oscillation is studied in a normal phase of a trapped Bose-Fermi-mixture gas
composed of single-species bosons and single-species fermions. Applying the moment …

The dynamic structure factor of a normal Fermi gas is investigated by using the moment
method for the Boltzmann equation. We determine the spectral function at finite …

We calculate the scattering rate of low-energy neutrinos in hot and dense neutron matter
encountered in neutrons stars and supernovae in the hydrodynamic regime. We find that the …

We study the mass-and population-imbalance effect on density (in-phase) and spin (out-of-
phase) collective modes in a two-component normal Fermi gas. By calculating the …

In the areas of low-density aerodynamics, vacuum industry, and micro-electromechanical
systems, the Navier-Stokes-Fourier equations fail to describe the gas dynamics when the …