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Lou, JZ; Qin, SJ; Ng, TK; Su, ZB; Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Topological effects in short antiferromagnetic Heisenberg chains
Source PublicationPHYSICAL REVIEW B
KeywordQuantum Spin Chains Renormalization-groups Sigma-model Edge States Symmetry Energy
AbstractThe manifestations of topological effects in finite antiferromagnetic Heisenberg chains are examined by density-matrix renormalization-group techniques. We find that the difference between integer and half-integer spin chains shows up in ground-state energy per site when the length of the spin chain is longer than similar toxi, where xisimilar toexp(piS) is a spin-spin correlation length, for spin magnitudes S up to 5/2. For open chains with spin magnitudes S=5/2 to S=5, we verify that end states with fractional spin quantum numbers S' exist and are visible in the structure of the low-energy excitation spectrum even when the chain length is much smaller than the correlation length xi. The robustness of end states points to the possibility of the existence of general hidden topological order in quantum spin chains with spin magnitudes Sgreater than or equal to1.
2002
ISSN1098-0121
Volume65Issue:10Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13584
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Lou, JZ,Qin, SJ,Ng, TK,et al. Topological effects in short antiferromagnetic Heisenberg chains[J]. PHYSICAL REVIEW B,2002,65(10):-.
APA Lou, JZ,Qin, SJ,Ng, TK,Su, ZB,&Lou, JZ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Topological effects in short antiferromagnetic Heisenberg chains.PHYSICAL REVIEW B,65(10),-.
MLA Lou, JZ,et al."Topological effects in short antiferromagnetic Heisenberg chains".PHYSICAL REVIEW B 65.10(2002):-.
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