Zero sound in a single component fermion - Bose Einstein Condensate mixture
arXiv:cond-mat/0411125 · doi:10.1103/PhysRevLett.93.250402
Abstract
The resonant dynamics of mediated interactions supports zero-sound in a cold atom degenerate mixture of a single component fermion gas and a Bose-Einstein condensate (BEC). We characterize the onset of instability in the phase separation of an unstable mixture and we find a rich collective mode structure for stable mixtures with one undamped mode that exhibits an avoided crossing and a Landau-damped mode that terminates.
4 pages, 2 figures