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Squared interaction matrix Sherrington-Kirkpatrick model for a spin glass

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The mean-field theory of a spin glass with a specific form of nearest- and next-nearest-neighbor interactions is investigated. Depending on the sign of the interaction matrix chosen we find either the continuous replica symmetry breaking seen in the Sherrington-Kirkpartick model or a one-step solution similar to that found in structural glasses. Our results are confirmed by numerical simulations and the link between the type of spin-glass behavior and the density of eigenvalues of the interaction matrix is discussed.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.65.224209

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Articles publicats en revistes (Física de la Matèria Condensada)

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Squared interaction matrix Sherrington-Kirkpatrick model for a spin glass