Quantum phase transition in the multi-mode Dicke model

Details Quantum phase transition in the multi-mode Dicke model Quantum phase transition in the multi-mode Dicke model

2006-06-11

arxiv.org/abs/cond-mat/0606270v2

Phys. Rev. B 75, Article 024402, 7 pages (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures

Scientific paper

An investigation of the quantum phase transition in both discrete and continuum field Dicke models is presented. A series of anticrossing features following the criticality is revealed in the band of the field modes. Critical exponents are calculated. We investigate the properties of a pairwise entanglement measured by a concurrence and obtain analytical results in the thermodynamic limit.

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