title: ac-Driven quantum phase transition in the Lipkin-Meshkov-Glick model.
abstract: We establish a set of nonequilibrium quantum phase transitions in the Lipkin-Meshkov-Glick model under monochromatic modulation of the interparticle interaction. We show that the external driving induces a rich phase diagram that characterizes the multistability in the system. Interestingly, the number of stable configurations can be tuned by increasing the amplitude of the driving field. Furthermore, by studying the quantum evolution, we demonstrate that the system exhibits a set of quantum phases that correspond to dynamically stabilized states.
authors.affiliation: Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany. georgt@itp.tu-berlin.de
authors.forename: G
authors.initials: G
authors.lastname: Engelhardt
authors.forename: V M
authors.initials: VM
authors.lastname: Bastidas
authors.forename: C
authors.initials: C
authors.lastname: Emary
authors.forename: T
authors.initials: T
authors.lastname: Brandes
mesh_terms: D003198:Computer Simulation; D008956:Models, Chemical; D008958:Models, Molecular; D044367:Phase Transition; D011789:Quantum Theory