Cluster Variation Method for Non-Uniform Ising and Heisenberg Models and Spin-Pair Correlation Function : Condensed Matter and Statis tical Physics
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概要
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A genera1 discussion on applying the cluster variation method to non-uniform Ising and Heisenberg models is given. In particular, a general formula is provided for obtaining the linear response to increases of the external fields and the parameters of interactions for the uniform Ising and Heisenberg models in the cluster variation method. As an illustration, it is shown that the expressions of the spin-pair correlation function in the pair and the square approximation are readily derived by the formula, for the Ising models on the square and simple cubic lattices.
- 理論物理学刊行会の論文
- 1991-02-25
著者
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Morita Tohru
Department Of Computer And Mathematical Sciences Graduate School Of Information Sciences
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Morita Tohru
Department Of Applied Science Faculty Of Enginccring Tohoku University
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MORITA Tohru
Department of Engineering Science, Faculty of Engineering Tohoku University
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MORITA Tohru
Department of Engineering Science, Faculty of Engineering Tohoku University : Department of Computer and Mathematical Sciences, Graduate School of Information Sciences, Tohoku University
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