Fidelity susceptibility and long-range correlation in the Kitaev honeycomb model

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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
刊名	PHYSICAL REVIEW A
	2008
卷号	78 期号:1 页码:-
关键词	Quantum Computation Anyons
ISSN号	1050-2947
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)(+).
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000258180300049
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5508]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Gu, SJ , Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
推荐引用方式 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):-.