Tuesday, November 13, 2012

1211.2683 (G. Engelhardt et al.)

AC-driven Quantum Phase Transition in the Lipkin-Meshkov-Glick Model    [PDF]

G. Engelhardt, V. M. Bastidas, C. Emary, T. Brandes
We establish a set of nonequilibrium quantum phase transitions in the Lipkin-Meshkov-Glick model driven under monochromatic nonadiabatic modulation of the transverse field. 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.
View original: http://arxiv.org/abs/1211.2683

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