Phase transitions in three-dimensional systems
Teoretičeskaâ i matematičeskaâ fizika, Tome 28 (1976) no. 1, pp. 123-126
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A study is made of the three-dimensional Ising model with long range potential. The free energy is calculated by means of an expansion in the long-range parameter. The first two terms of the series are calculated. In this approximationl the system has a phase transition.
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