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题名: Quantum criticality in a generalized Dicke model
作者: Li, Yong ;  Wang, Z. D. ;  Sun, C. P.
刊名: PHYSICAL REVIEW A
出版日期: 2006
卷号: 74, 期号:2, 页码:-
关键词: PHASE-TRANSITIONS ;  MATTER
学科分类: Physics
通讯作者: Li, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China; Univ Hong Kong, Ctr Theoret & Comput Phys, Hong Kong, Hong Kong, Peoples R China
英文摘要: We 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000240238300136
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5930
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Li, Yong,Wang, Z. D.,Sun, C. P.. Quantum criticality in a generalized Dicke model[J]. PHYSICAL REVIEW A,2006,74(2):-.
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