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Activated processes and Inherent Structure dynamics of finite-size mean-field models for glasses | | A. Crisanti
; F. Ritort
; | | Date: |
15 Nov 1999 | | Subject: | Disordered Systems and Neural Networks | cond-mat.dis-nn | | Abstract: | We investigate the inherent structure (IS) dynamics of mean-field {it finite-size} spin-glass models whose high-temperature dynamics is described in the thermodynamic limit by the schematic Mode Coupling Theory for super-cooled liquids. Near the threshold energy the dynamics is ruled by activated processes which induce a logarithmic slow relaxation. We show the presence of aging in both the IS correlation and integrated response functions and check the validity of the one-step replica symmetry breaking scenario in the presence of activated processes. Our work shows: 1) The violation of the fluctuation-dissipation theorem is given by the configurational entropy, 2) The intermediate time regime ($log(t)sim N$) in mean-field theory automatically includes activated processes opening the way to analytically investigate activated processes by computing corrections beyond mean-field. | | Source: | arXiv, cond-mat/9911226 | | Services: | Forum | Review | PDF | Favorites | |
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