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quant-ph2004
Entanglement and Entropy in a Spin-Boson Quantum Phase Transition
N. Lambert, C. Emary, T. Brandes
We investigate the entanglement properties of an ensemble of atoms interacting with a single bosonic field mode via the Dicke (superradiance) Hamiltonian. The model exhibits a quan…
quant-ph2004
Phase Transitions in Generalised Spin-Boson (Dicke) Models
Clive Emary, Tobias Brandes
We consider a class of generalised single mode Dicke Hamiltonians with arbitrary boson coupling in the pseudo-spin - plane. We find exact solutions in the thermodynamic, larg…