ITP OpenIR  > 理论物理所2011年知识产出
Topological term in the non-linear sigma model of the SO(5) spin chains
Lee, DH; Zhang, GM; Xiang, T; Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
2011
发表期刊NUCLEAR PHYSICS B
ISSN0550-3213
卷号846期号:3页码:607-615
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.
部门归属[Zhang, Guang-Ming] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Lee, Dung-Hai] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; [Lee, Dung-Hai] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA; [Xiang, Tao] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; [Xiang, Tao] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Bond Ground-states Valence-bond Quantum Antiferromagnets Systems
学科领域Physics
资助者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
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收录类别SCI
语种英语
资助者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
WOS记录号WOS:000288412100007
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14350
专题理论物理所2011年知识产出
通讯作者Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
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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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