Title:
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Continuous phase transition in a spin-glass model without time-reversal symmetry
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Author:
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Parisi, G.; Picco, M.; Ritort Farran, Fèlix
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Other authors:
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Universitat de Barcelona |
Abstract:
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We investigate the phase transition in a strongly disordered short-range three-spin interaction model characterized by the absence of time-reversal symmetry in the Hamiltonian. In the mean-field limit the model is well described by the Adam-Gibbs-DiMarzio scenario for the glass transition; however, in the short-range case this picture turns out to be modified. The model presents a finite temperature continuous phase transition characterized by a divergent spin-glass susceptibility and a negative specific-heat exponent. We expect the nature of the transition in this three-spin model to be the same as the transition in the Edwards-Anderson model in a magnetic field, with the advantage that the strong crossover effects present in the latter case are absent. |
Subject(s):
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-Física estadística -Termodinàmica -Sistemes no lineals -Propietats magnètiques -Equacions d'estat -Regla de les fases i equilibri -Transformacions de fase (Física estadística) -Statistical physics -Thermodynamics -Nonlinear systems -Magnetic properties -Equations of state -Phase rule and equilibrium -Phase transformations (Statistical physics) |
Rights:
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(c) American Physical Society, 1999
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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