Superlattice switching from parametric instabilities in a driven-dissipative BEC in a cavity
arXiv:1710.02474 · doi:10.1103/PhysRevA.98.053620
Abstract
We numerically obtain the full time-evolution of a parametrically-driven dissipative Bose-Einstein condensate in an optical cavity and investigate the implications of driving for the phase diagram. Beyond the normal and superradiant phases, a third nonequilibrium phase emerges as a manybody parametric resonance. This dynamical normal phase switches between two symmetry-broken superradiant configurations. The switching implies a breakdown of the system's mapping to the Dicke model. Unlike the other phases, the dynamical normal phase shows features of nonintegrability and thermalization.
5 pages, 3 figures
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