99-172 N.Cancrini, F.Martinelli
Comparison of finite volume canonical and grand canonical Gibbs measures under a mixing condition (136K, plain TeX) May 14, 99
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Abstract. We envisage a simple approach to prove sharp bounds between the finite volume (multi) canonical and (multi) grand canonical expectation of local observables of a lattice discrete spin model by assuming a mixing property for the Gibbsian specifications. We then apply our results to various situations including mean field perturbations of the Ising model. Our method does not rely upon a local limit theorem and applies also to the dilute Ising model in the Griffiths phase for which the mixing condition fails

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