Knowledge Management System of Institute of Theoretical Physics, CAS
Lee, DH; Zhang, GM; Xiang, T ; Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
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| Topological term in the non-linear sigma model of the SO(5) spin chains | |
| Source Publication | NUCLEAR PHYSICS B
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| Language | 英语 |
| Keyword | Bond Ground-states Valence-bond Quantum Antiferromagnets Systems |
| Abstract | 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. |
| 2011 | |
| ISSN | 0550-3213 |
| Volume | 846Issue:3Pages:607-615 |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | DOE [DE-AC02-05CH11231]; NSF-China; MOST, China ; DOE [DE-AC02-05CH11231]; NSF-China; MOST, China ; DOE [DE-AC02-05CH11231]; NSF-China; MOST, China ; DOE [DE-AC02-05CH11231]; NSF-China; MOST, China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/14350 |
| Collection | SCI期刊论文 |
| Corresponding Author | Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. |
| Recommended Citation GB/T 7714 | Lee, DH,Zhang, GM,Xiang, T,et al. Topological term in the non-linear sigma model of the SO(5) spin chains[J]. NUCLEAR PHYSICS B,2011,846(3):607-615. |
| APA | Lee, DH,Zhang, GM,Xiang, T,&Zhang, GM .(2011).Topological term in the non-linear sigma model of the SO(5) spin chains.NUCLEAR PHYSICS B,846(3),607-615. |
| 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):607-615. |
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