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题名: Phase diagram of a one-dimensional spin-orbital model
作者: Itoi, C ;  Qin, SJ ;  Affleck, I
刊名: PHYSICAL REVIEW B
出版日期: 2000
卷号: 61, 期号:10, 页码:6747-6756
关键词: LINEAR SIGMA-MODELS ;  CRITICAL-BEHAVIOR ;  2 DIMENSIONS ;  CHAINS ;  SYSTEMS
学科分类: Physics
通讯作者: Itoi, C , Univ British Columbia, Dept Phys & Astron, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000085985800044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13010
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Itoi, C,Qin, SJ,Affleck, I. Phase diagram of a one-dimensional spin-orbital model[J]. PHYSICAL REVIEW B,2000,61(10):6747-6756.
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