Abstract
We consider the general spin quantum mechanical anisotropic Heisenberg model on av-dimensional lattice with potential γvϱ(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.
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Communicated by G. Gallavotti
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Pearce, P.A., Thompson, C.J. The anisotropic Heisenberg model in the long-range interaction limit. Commun.Math. Phys. 41, 191–201 (1975). https://doi.org/10.1007/BF01608757
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DOI: https://doi.org/10.1007/BF01608757