Landau damping in a dipolar Bose–Fermi mixture in the Bose–Einstein condensation (BEC) limit

Abstract

By using a mean-field approximation which describes the coupled oscillations of condensate and noncondensate atoms in the collisionless regime, Landau damping in a dilute dipolar Bose-Fermi mixture in the BEC limit where Fermi superfluid is treated as tightly bounded molecules, is investigated. In the case of a uniform quasi-two-dimensional (2D) case, the results for the Landau damping due to the Bose-Fermi interaction are obtained at low and high temperatures. It is shown that at low temperatures, the Landau damping rate is exponentially suppressed. By increasing the strength of dipolar interaction, and the energy of boson quasiparticles, Landau damping is suppressed over a broader temperature range.

Enhanced second harmonic generation in a two-dimensional optical micro-cavity

“…The phenomenon of BEC was first proposed by Einstein in 1924, who showed that a noninteracting bosonic gas can undergo a phase transition below a critical temperature to macroscopically populate the ground state. In recent years, the BEC-like phase transition has been observed in several physical systems, [15][16][17][18][19][20] including atomic gas, exciton polaritions, solid-state quasiparticles, and so on. It is well known that essentially the laser beam or electromagnetic field can be considered as a boson system consisting of photons.…”

Analysis of Landau damping in radially inhomogeneous plasma column

“…In recent years, Landau damping has been studied in plasmas with different distribution functions. [30][31][32][33][34] Liu et al [33] derived the generalized dispersion equation for longitudinal oscillation in an unmagnetized, collisionless, isotropic and relativistic plasma in the context of nonextensive q-distribution.…”