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本文运用Baxter提出的IRF模型的无序解条件研究一种推广混合自旋模型,得到了该模型在无序区域上自由能的精确表达式以及无序区域上相互作用参数应满足的条件。并讨论了某一特定方向上相关函数的渐近行为。A condition given by Baxter for the general IRF model to exhibit a disorder solution is applied to a generalised mixed spin model. The exact expression for the free energy and the condition ensuring the validity of it are obtained. The asymptotic behaviour of the intra-row correlations is discussed.
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