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Squared interaction matrix Sherrington-Kirkpatrick model for a spin glass
Dean, D.S.; Ritort Farran, Fèlix
Universitat de Barcelona
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.
Vidres de spin
Propietats magnètiques
Spin glasses
Magnetic properties
(c) The American Physical Society, 2002
The American Physical Society

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