Nonequilibrium Quantum Phase Transitions in the Dicke Model

Details Nonequilibrium Quantum Phase Transitions in the Dicke Model Nonequilibrium Quantum Phase Transitions in the Dicke Model

2011-08-15

arxiv.org/abs/1108.2987v2

Phys. Rev. Lett. 108, 043003 (2012)

Physics

Quantum Physics

4 pages, 3 Figures, and supplementary material. This new version contains corrected typos, new references and new versions of

Scientific paper

10.1103/PhysRevLett.108.043003

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 occurence 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.

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