Journal article

ANISOTROPIC HEISENBERG MODEL IN LONG-RANGE INTERACTION LIMIT

PA PEARCE, CJ THOMPSON

COMMUNICATIONS IN MATHEMATICAL PHYSICS | SPRINGER VERLAG | Published : 1975

Abstract

We consider the general spin quantum mechanical anisotropic Heisenberg model on a v-dimensional lattice with potential γvρ{variant}(γ|r|) of Kac type. In the limit γ→0+ (after the thermodynamic limit) it is shown that the free energy is equivalent to the corresponding Curie-Weiss or mean-field expression. © 1975 Springer-Verlag.

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