Critical Properties of S=1 XXZ Chain
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概要
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The S"-S' correlation function of S= l XXZ chain is calculated at lowtemperatures by means of the transfer matrix with use of the Trotter formula.Critical properties of the correlation function, such as critical indices y, 77 and V' andthe mass identified by the inverse correlation length at T=O, are obtained. We con-clude that a groundstate with an excitation gap appears for the anisotropy parameterA<A. : -0.3 including the isotropic antiferromagnetic point (A = - 1). We have ob-tained r7 : l /4 at A = d. in accord with the theoretical prediction by Haldane and denNijs. Our result, however, shows the monotonic increase of the excitation gap withdecreasing A for A<A. contrary to Haldane's prediction.
- 社団法人日本物理学会の論文
- 1986-02-15
著者
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Kubo Kenn
Institute Of Physics University Of Tsukuba
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Kubo K
Institute Of Physics University
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Kubo Kenn
Institute Of Physics The University Of Tsukuba:max Planck Institut Fur Physik Und Astrophysik
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TAKADA Satoshi
Institute of Physics,University of Tsukuba
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Takada Satoshi
Institute Of Physics University Of Tsukuba
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Takada Satoshi
Institute Of Physics University
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Takada Satoshi
Institute For Solid States Physics University Of Tokyo : Department Of Physics College Of General Education University Of Tokyo
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