English

Activated processes and Inherent Structure dynamics of finite-size mean-field models for glasses

Disordered Systems and Neural Networks 2009-10-31 v2

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)N\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.

Keywords

Cite

@article{arxiv.cond-mat/9911226,
  title  = {Activated processes and Inherent Structure dynamics of finite-size mean-field models for glasses},
  author = {A. Crisanti and F. Ritort},
  journal= {arXiv preprint arXiv:cond-mat/9911226},
  year   = {2009}
}

Comments

8 pages, 3 postscript figures, EPL format, improved version