Continuous phase transition in a spin-glass model without time-reversal symmetry
Abstract
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 3-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.
Cite
@article{arxiv.cond-mat/9812230,
title = {Continuous phase transition in a spin-glass model without time-reversal symmetry},
author = {G. Parisi and M. Picco and F. Ritort},
journal= {arXiv preprint arXiv:cond-mat/9812230},
year = {2009}
}
Comments
19 pages, Latex, 16 ps figures