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题名: String order in half-integer-spin antiferromagnetic Heisenberg chains
作者: Lou, JZ ;  Qin, SJ ;  Chen, CF
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2003
卷号: 91, 期号:8, 页码:-
关键词: QUANTUM RENORMALIZATION-GROUPS ;  BOND GROUND-STATES ;  LONG-RANGE ORDER ;  EDGE STATES ;  SIGMA-MODEL
学科分类: Physics
通讯作者: Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA.
部门归属: Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We derive the extended string order parameter O(S) for antiferromagnetic Heisenberg chains with half-integer spin S in the valence-bond-solid picture. We obtain the analytic power-law scaling of O(S) versus the chain length L and show that O(S) scales at an extremely slow pace that decreases rapidly with growing spin magnitude. Furthermore, accurate numerical calculations show that the power-law scaling sets in only when L exceeds a characteristic length scale l(S) which increases very fast with growing S. Consequently, a pseudo-long-range string order exists in half-integer-spin Heisenberg chains. The implications of this result and its relationship to other topological features such as the end-chain states are discussed.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000184898800051
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13234
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:
Lou, JZ,Qin, SJ,Chen, CF. String order in half-integer-spin antiferromagnetic Heisenberg chains[J]. PHYSICAL REVIEW LETTERS,2003,91(8):-.
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