title: Nonequilibrium quantum phase transitions in the Dicke model.
abstract: We establish a set of nonequilibrium quantum phase transitions in the Dicke model by considering a monochromatic nonadiabatic modulation of the atom-field coupling. For weak driving the system exhibits a set of sidebands which allow the circumvention of the no-go theorem which otherwise forbids the occurrence of superradiant phase transitions. At strong driving we show that the system exhibits a rich multistable structure and exhibits both first- and second-order nonequilibrium quantum phase transitions.
authors.affiliation: Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany.
authors.forename: V M
authors.initials: VM
authors.lastname: Bastidas
authors.forename: C
authors.initials: C
authors.lastname: Emary
authors.forename: B
authors.initials: B
authors.lastname: Regler
authors.forename: T
authors.initials: T
authors.lastname: Brandes