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题名: Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model
作者: Yang, Shuo ;  Gu, Shi-Jian ;  Sun, Chang-Pu ;  Lin, Hai-Qing
刊名: PHYSICAL REVIEW A
出版日期: 2008
卷号: 78, 期号:1, 页码:-
关键词: QUANTUM COMPUTATION ;  ANYONS
学科分类: Physics
通讯作者: Gu, SJ , Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
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
英文摘要: 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)(+).
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000258180300049
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5508
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:
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):-.
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