title: Dynamical quantum phase transitions in the dissipative Lipkin-Meshkov-Glick model with proposed realization in optical cavity QED.
abstract: We present an optical cavity QED configuration that is described by a dissipative version of the Lipkin-Meshkov-Glick model of an infinitely coordinated spin system. This open quantum system exhibits both first- and second-order nonequilibrium quantum phase transitions as a single, effective field parameter is varied. Light emitted from the cavity offers measurable signatures of the critical behavior, including that of the spin-spin entanglement.
authors: Institute for Theoretical Physics, University of Innsbruck, Innsbruck A-6020, Austria.
authors: S
authors: S
authors: Morrison
authors: A S
authors: AS
authors: Parkins