paper

A mean field method with correlations determined by linear response

arXiv:1211.6400 · doi:10.1103/PhysRevE.87.052111

Abstract

We introduce a new mean-field approximation based on the reconciliation of maximum entropy and linear response for correlations in the cluster variation method. Within a general formalism that includes previous mean-field methods, we derive formulas improving upon, e.g., the Bethe approximation and the Sessak-Monasson result at high temperature. Applying the method to direct and inverse Ising problems, we find improvements over standard implementations.

15 pages, 8 figures, 9 appendices, significant expansion on versions v1 and v2

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