Static Chaos in Spin Glasses against quenched disorder perturbations

Details Static Chaos in Spin Glasses against quenched disorder perturbations Static Chaos in Spin Glasses against quenched disorder perturbations

1995-02-11

arxiv.org/abs/cond-mat/9502045v1

Physics

Condensed Matter

13 Pages + 7 Figures, Latex File, figures uuencoded at end of file

Scientific paper

10.1088/0305-4470/28/14/008

We study the chaotic nature of spin glasses against perturbations of the realization of the quenched disorder. This type of perturbation modifies the energy landscape of the system without adding extensive energy. We exactly solve the mean-field case, which displays a very similar chaos to that observed under magnetic field perturbations, and discuss the possible extension of these results to the case of short-ranged models. It appears that dimension four plays the role of a specific critical dimension where mean-field theory is valid. We present numerical simulation results which support our main conclusions.

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