Critical Properties of Spin-1 Antiferromagnetic Heisenberg Chains with Bond Alternation and Uniaxial Single-Ion-Type Anisotropy
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概要
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One dimensional S = 1 antiferromagnetic Heisenberg chains with bond alternation and uniaxial single-ion-type anisotropy are studied by numerical exact diagonalization of finite size systems. We calculate the ground state phase diagram using the twisted boundary condition method for D ≥ 0. The ground states of this model contain the Haldane state, large-D state and the dimer state. Using conformal field theory and the level spectroscopy method, we calculate the D and δ-dependence of the Luttinger liquid paraments K and the critical exponent ν of the energy gap.
- 理論物理学刊行会の論文
- 2000-04-28
著者
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Hida K
Saitama Univ. Saitama
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Sanctuary B
Department Of Chemistry Mcgill University
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Chen W
Mcgill Univ. Pq Can
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Chen W
Welding Research Institute Osaka University
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CHEN Wei
Physics Department, Saitama University
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HIDA Kazuo
Physics Department, Saitama University
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SANCTUARY Bryan
Department of Chemistry, McGill University
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Sanctuary Bryan
Department Of Chemistry Mcgill University
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Chen Wei
The Department Of Electrical And Computer Engineering Nagoya Institute Of Technology
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Chen Wei
Department of Electrical and Computer Engineering, Nagoya Institute Technology
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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 Electrical and Computer Engineering, Nagoya Institute of Technology
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