Pair correlations in the cluster variation approximation

J.M. Sanchez

Physica A: Statistical Mechanics and its Applications, 1982, vol. 111, issue 1, 200-216

Abstract: The cluster variation method is used to obtain approximate free energy functions for a binary system in an inhomogeneous field, in order to calculate the Fourier transform of the pair correlation functions. In the two-dimensional square lattice, using the nearest-neighbors square as the basic cluster, the correlation functions are correctly given up to the order 7 in the inverse temperature. The effect of second-neighbor pairs and many-body interactions is investigated.

Date: 1982
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:111:y:1982:i:1:p:200-216

DOI: 10.1016/0378-4371(82)90089-9

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