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Off-Equilibrium Dynamics at Very Low Temperatures in 3d Spin Glasses | | E. Marinari
; G. Parisi
; F. Ricci-Tersenghi
; J. J. Ruiz-Lorenzo
; | | Date: |
15 Oct 1999 | | Journal: | J. Phys. A. 33, 2373 (2000) | | Subject: | Disordered Systems and Neural Networks; Statistical Mechanics | cond-mat.dis-nn cond-mat.stat-mech | | Abstract: | We present a high statistic systematic study of the overlap correlation function well below the critical temperature in the three dimensional Gaussian spin glass. The off-equilibrium correlation function has been studied confirming the power law behavior for the dynamical correlation length. In particular we have computed the dynamical critical exponent $z$ in a wide range of temperatures, $0.35 le T le 0.9$, obtaining a dependence $z(T)=6.2/T$ in a very good agreement with recent experiments. Moreover, we report a study of the violation of the fluctuation-dissipation theorem for very low temperatures $T=0.5$ and $T=0.35$. All our numerical results avoid a droplet model interpretation even when $T$ is as low as $T=0.35$. | | Source: | arXiv, cond-mat/9910232 | | Services: | Forum | Review | PDF | Favorites | |
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