Renormalization Group Approach to Spin Glass Systems

Abstract

A renormalization group transformation suitable for spin glass models and, more generally, for disordered models, is presented. The procedure is non-standard in both the nature of the additional interactions and the coarse graining transformation, that is performed on the overlap probability measure (which is clearly non-Gibbsian). Universality classes are thus naturally defined on a large set of models, going from ${\mathbb{Z}}_2$ and Gaussian spin glasses to Ising and fully frustrated models, and others.

12 pages, 4 figures

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