title: Collective dynamics of Bose-Einstein condensates in optical cavities.
abstract: Experiments on Bose-Einstein condensates in optical cavities have observed a coherent state of the matter-light system-superradiance. The nature of these experiments demands consideration of collective dynamics. Including cavity leakage and the backreaction of the cavity field on the condensate, we find a rich phase diagram including multiphase coexistence regions, and persistent optomechanical oscillations. The proximity of the phase boundaries results in a critical slowing down of the decay of many-body oscillations, which can be enhanced by large cavity loss.
authors.affiliation: University of Cambridge, Cavendish Laboratory, Cambridge, CB3 0HE, UK.
authors.forename: J
authors.initials: J
authors.lastname: Keeling
authors.forename: M J
authors.initials: MJ
authors.lastname: Bhaseen
authors.forename: B D
authors.initials: BD
authors.lastname: Simons