High temperature Sherrington-Kirkpatrick model for general spins

Details High temperature Sherrington-Kirkpatrick model for general spins High temperature Sherrington-Kirkpatrick model for general spins

2002-10-09

arxiv.org/abs/math/0210140v1

Mathematics

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Francesco Guerra and Fabio Toninelli have developped a very powerful technique to study the high temperature behaviour of the Sherrington-Kirkpatrick mean field spin glass model. They show that this model is asymptoticaly comparable to a linear model. The key ingredient is a clever interpolation technique between the two different Hamiltonians describing the models. This paper contribution to the subject are the following: (1) The replica-symmetric solution holds for general spins, not just $\pm 1$ valued. (2) The proof does not involve cavitation but only first order differential calculus and Gaussian integration by parts.

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