Ground State Phase Diagram of the One Dimensional S=1/2 XXZ Model with Dimerization and Quadrumerization
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概要
- 論文の詳細を見る
The one dimensional S = 1/2 XXZ model with dimerization (1 - j) and quadrumerization delta is studied by the numerical exact diagonalization of finite size systems. Using the conformal field theory and the level spectroscopy method, we calculate the ground state phase diagram with XY-like anisotropy Delta (0 < Delta < 1). The ground states of this model contain the Haldane state, S = 1 dimer state, S = 1 large-D state and S = 1/2 dimer state as limiting cases. The Delta and delta-dependence of the critical exponent v of the energy gap is determined from the conformal dimensions of excited states.
- 社団法人日本物理学会の論文
- 1999-08-15
著者
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Chen Wei
Department of Obstetrics and Gynecology, Kobe University Graduate School of Medicine
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Hida K
Saitama Univ. Saitama
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Hida Kazuo
Department Of Physics Faculty Of Science Saitama University
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Hida Kazuo
Department Of Engineering Science Faculty Of Engineering Hokkaido University
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Chen Wei
Department Of Food And Nutrition Providence University
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Chen Wei
Department Of Physics Saitama University
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Chen Wei
Department Of Chemistry Mcgill University:(present Address)institute Of Biomedical Engineering Unive
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Chen Wei
Department Of Chemical Engineering Nagoya University
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HIDA Kazuo
Department of Physics, Saitama University
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HIDA Kazuo
Department of Physics, University of Tokyo
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Chen Wei
Department of Cell Biology, Third Military Medical University
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