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Article: Quantum criticality in a generalized Dicke model

TitleQuantum criticality in a generalized Dicke model
Authors
KeywordsPhysics
Issue Date2006
PublisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org
Citation
Physical Review A - Atomic, Molecular, And Optical Physics, 2006, v. 74 n. 2 How to Cite?
AbstractWe 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. © 2006 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/57323
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Yen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorSun, CPen_HK
dc.date.accessioned2010-04-12T01:33:11Z-
dc.date.available2010-04-12T01:33:11Z-
dc.date.issued2006en_HK
dc.identifier.citationPhysical Review A - Atomic, Molecular, And Optical Physics, 2006, v. 74 n. 2en_HK
dc.identifier.issn1050-2947en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57323-
dc.description.abstractWe 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. © 2006 The American Physical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.orgen_HK
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physicsen_HK
dc.rightsPhysical Review A (Atomic, Molecular and Optical Physics). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleQuantum criticality in a generalized Dicke modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1050-2947&volume=74&issue=2&spage=023815&epage=1 &date=2006&atitle=Quantum+criticality+in+a+generalized+Dicke+modelen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevA.74.023815en_HK
dc.identifier.scopuseid_2-s2.0-33747694403en_HK
dc.identifier.hkuros121186-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33747694403&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume74en_HK
dc.identifier.issue2en_HK
dc.identifier.isiWOS:000240238300136-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, Y=36013892600en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridSun, CP=7404248944en_HK
dc.identifier.citeulike5811625-

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