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Phase diagram of a one-dimensional spin-orbital model
Itoi, C; Qin, SJ; Affleck, I; Itoi, C , Univ British Columbia, Dept Phys & Astron, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
2000
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号61期号:10页码:6747-6756
摘要We study a one-dimensional spin-orbital model using both analytical and numerical methods. Renormalization group calculations are performed in the vicinity of a special integrable point in the phase diagram with SU(4) symmetry. These indicate the existence of a gapless phase in an extended region of the phase diagram, missed in previous studies. This phase is SU(4) invariant at low energies apart from the presence of different velocities for spin and orbital degrees of freedom. The phase transition into a gapped dimerized phase is in a generalized Kosterlitz-Thouless universality class. The phase diagram of this model is sketched using the density matrix renormalization group technique.
部门归属Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada; Nihon Univ, Dept Phys, Tokyo, Japan; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ British Columbia, Canadian Inst Adv Res, Vancouver, BC V6T 1Z1, Canada; Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA
关键词Linear Sigma-models Critical-behavior 2 Dimensions Chains Systems
学科领域Physics
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收录类别SCI
WOS记录号WOS:000085985800044
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被引频次:79[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13010
专题理论物理所1978-2010年知识产出
通讯作者Itoi, C , Univ British Columbia, Dept Phys & Astron, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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Itoi, C,Qin, SJ,Affleck, I,et al. Phase diagram of a one-dimensional spin-orbital model[J]. PHYSICAL REVIEW B,2000,61(10):6747-6756.
APA Itoi, C,Qin, SJ,Affleck, I,&Itoi, C , Univ British Columbia, Dept Phys & Astron, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada..(2000).Phase diagram of a one-dimensional spin-orbital model.PHYSICAL REVIEW B,61(10),6747-6756.
MLA Itoi, C,et al."Phase diagram of a one-dimensional spin-orbital model".PHYSICAL REVIEW B 61.10(2000):6747-6756.
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