Quantum criticality in a generalized Dicke model

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dc.creatorLi, Yong
dc.creatorWang, Z. D.
dc.creatorSun, C. P.
dc.date2006-04-13
dc.date2007-10-01
dc.date.accessioned2026-07-07T08:33:00Z
dc.date.available2026-07-07T08:33:00Z
dc.descriptionWe employ a generalized Dicke model to study theoretically the quantum criticality of an extended two-level atomic ensemble interacting with a single-mode quantized light field. Effective Hamiltonians are derived and diagonalized to investigate numerically their eigenfrequencies for different quantum phases in the system. Based on the analysis of the eigenfrequencies, an intriguing quantum-phase transition from a normal phase to a superradiant phase is revealed clearly, which is quite different from that observed with a standard Dicke model.
dc.description6 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0604097
dc.identifierhttp://arxiv.org/abs/quant-ph/0604097
dc.identifierPhys. Rev. A 74, 023815 (2006)
dc.identifierdoi:10.1103/PhysRevA.74.023815
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138977
dc.subjectQuantum Physics
dc.titleQuantum criticality in a generalized Dicke model
dc.typetext

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