Quantum Chaos Triggered by Precursors of a Quantum Phase Transition: The Dicke Model

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dc.creatorEmary, C.
dc.creatorBrandes, T.
dc.date2002-07-11
dc.date2003-03-06
dc.date.accessioned2026-07-07T12:55:46Z
dc.date.available2026-07-07T12:55:46Z
dc.descriptionWe consider the Dicke Hamiltonian, a simple quantum-optical model which exhibits a zero-temperature quantum phase transition. We present numerical results demonstrating that at this transition the system changes from being quasi-integrable to quantum chaotic. By deriving an exact solution in the thermodynamic limit we relate this phenomenon to a localisation-delocalisation transition in which a macroscopic superposition is generated. We also describe the classical analogues of this behaviour.
dc.description4 pages, 5 figures, minor changes, Journal ref. added
dc.identifierhttps://arxiv.org/abs/cond-mat/0207290
dc.identifierhttp://arxiv.org/abs/cond-mat/0207290
dc.identifierPhys.Rev.Lett.90:044101,2003
dc.identifierdoi:10.1103/PhysRevLett.90.044101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224363
dc.subjectMesoscale and Nanoscale Physics
dc.subjectDisordered Systems and Neural Networks
dc.subjectQuantum Physics
dc.titleQuantum Chaos Triggered by Precursors of a Quantum Phase Transition: The Dicke Model
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