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Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model
Yang, Shuo; Gu, Shi-Jian; Sun, Chang-Pu; Lin, Hai-Qing; Gu, SJ , Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
2008
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号78期号:1页码:-
摘要We study exactly both the ground-state fidelity susceptibility and bond-bond correlation function in the Kitaev honeycomb model. Our results show that the fidelity susceptibility can be used to identify the topological phase transition from a gapped A phase with Abelian anyon excitations to a gapless B phase with non-Abelian anyon excitations. We also find that the bond-bond correlation function decays exponentially in the gapped phase, but algebraically in the gapless phase. For the former case, the correlation length is found to be 1/xi=2 sinh(-1)[root 2J(z)-1/(1-J(z))], which diverges around the critical point J(z)=(1/2)(+).
部门归属[Yang, S; Gu, SJ; Lin, HQ] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China; [Yang, S; Gu, SJ; Lin, HQ] Chinese Univ Hong Kong, ITP, Hong Kong, Hong Kong, Peoples R China; [Yang, S; Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Quantum Computation Anyons
学科领域Physics
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收录类别SCI
WOS记录号WOS:000258180300049
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被引频次:73[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5508
专题理论物理所SCI论文
通讯作者Gu, SJ , Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
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GB/T 7714
Yang, Shuo,Gu, Shi-Jian,Sun, Chang-Pu,et al. Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model[J]. PHYSICAL REVIEW A,2008,78(1):-.
APA Yang, Shuo,Gu, Shi-Jian,Sun, Chang-Pu,Lin, Hai-Qing,&Gu, SJ , Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China.(2008).Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model.PHYSICAL REVIEW A,78(1),-.
MLA Yang, Shuo,et al."Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model".PHYSICAL REVIEW A 78.1(2008):-.
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