title: Zero sound in a mixture of a single-component fermion gas and a Bose-Einstein condensate.
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. 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.
authors.affiliation: ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: D H
authors.initials: DH
authors.lastname: Santamore
authors.forename: Sergio
authors.initials: S
authors.lastname: Gaudio
authors.forename: Eddy
authors.initials: E
authors.lastname: Timmermans