Disorder chaos in spin glasses
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We investigate numerically disorder chaos in spin glasses, i.e. the sensitivity of the ground state to small changes of the random couplings. Our study focuses on the Edwards-Anderson model in d = 1, 2, 3 and in mean field. We find that in all cases, simple scaling laws, involving the size of the system and the strength of the perturbation, are obeyed. We characterize in detail the distribution of overlap between ground states and the geometrical properties of flipped spin clusters in both the weak and strong chaos regime. The possible relevance of these results to temperature chaos is discussed.
[1] M. Mézard,et al. Spin Glass Theory and Beyond , 1987 .
[2] Non-compact local excitations in spin-glasses , 2001, cond-mat/0107544.
[3] Chaos and residual correlations in pinned disordered systems. , 2005, cond-mat/0505679.
[4] Local excitations in mean-field spin glasses , 2003, cond-mat/0304590.