Topological term in the non-linear sigma model of the SO(5) spin chains
文献类型：期刊论文
| 作者 | Lee, DH ; Zhang, GM ; Xiang, T |
| 刊名 | NUCLEAR PHYSICS B
 |
| 出版日期 | 2011 |
| 卷号 | 846期号:3页码:607 |
| 关键词 | BOND GROUND-STATES VALENCE-BOND QUANTUM ANTIFERROMAGNETS SYSTEMS |
| ISSN号 | 0550-3213 |
| 通讯作者 | Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. |
| 中文摘要 | We show that there is a topological (Berry phase) term in the non-linear sigma model description of the SO(5) spin chain. It distinguishes the linear and projective representations of the SO(5) symmetry group, in exact analogy to the well-known theta-term of the SO(3) spin chain. The presence of the topological term is due to the fact that pi(2)(SO(5)/SO(3) x SO(2)) = Z. We discuss the implication of our results on the spectra of the SO(5) spin chain, and connect it with a recent solvable SO(5) spin model which exhibits valence bond solid ground state and edge degeneracy. (c) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | DOE [DE-AC02-05CH11231]; NSF-China; MOST, China |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45986]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Lee, DH,Zhang, GM,Xiang, T. Topological term in the non-linear sigma model of the SO(5) spin chains[J]. NUCLEAR PHYSICS B,2011,846(3):607. |
| APA | Lee, DH,Zhang, GM,&Xiang, T.(2011).Topological term in the non-linear sigma model of the SO(5) spin chains.NUCLEAR PHYSICS B,846(3),607. |
| MLA | Lee, DH,et al."Topological term in the non-linear sigma model of the SO(5) spin chains".NUCLEAR PHYSICS B 846.3(2011):607. |
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来源：物理研究所
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