String order in half-integer-spin antiferromagnetic Heisenberg chains
文献类型：期刊论文
| 作者 | Lou, JZ; Qin, SJ ; Chen, CF; Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA.
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| 刊名 | PHYSICAL REVIEW LETTERS
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| 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 |
| ISSN号 | 0031-9007 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000184898800051 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13234]  |
| 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 | Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA. |
| 推荐引用方式 GB/T 7714 | Lou, JZ,Qin, SJ,Chen, CF,et al. String order in half-integer-spin antiferromagnetic Heisenberg chains[J]. PHYSICAL REVIEW LETTERS,2003,91(8):-. |
| APA | Lou, JZ,Qin, SJ,Chen, CF,&Lou, JZ , Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA..(2003).String order in half-integer-spin antiferromagnetic Heisenberg chains.PHYSICAL REVIEW LETTERS,91(8),-. |
| MLA | Lou, JZ,et al."String order in half-integer-spin antiferromagnetic Heisenberg chains".PHYSICAL REVIEW LETTERS 91.8(2003):-. |
入库方式： OAI收割
来源：理论物理研究所
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