Variational principle for the distribution function of the effective field for the random Ising model in the Bethe approximation

T. Morita

Physica A: Statistical Mechanics and its Applications, 1979, vol. 98, issue 3, 566-572

Abstract: We study the random Ising model in the pair approximation of the cluster variation method. We show that the distribution function of the effective field is determined either by a reducibility condition of the distribution function of two sites to that of one site or by a stationarity condition of the averaged free energy.

Date: 1979
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:98:y:1979:i:3:p:566-572

DOI: 10.1016/0378-4371(79)90154-7

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