Fast relaxation time in a spin model with glassy behavior
Disordered Systems and Neural Networks
2016-11-23 v1
Abstract
We consider a frustrated spin model with a glassy dynamics characterized by a slow component and a fast component in the relaxation process. The slow process involves variables with critical behavior at finite temperature T_p and has a global character like the (structural) alpha-relaxation of glasses. The fast process has a more local character and can be associated to the beta-relaxation of glasses. At temperature T>T_p the fast relaxation follows the non-Arrhenius behavior of the slow variables. At T ~< T_p the fast variables have an Arrhenius behavior, resembling the alpha-beta bifurcation of fragile glasses. The model allows us to analyze the relation between the dynamics and the thermodynamics.
Cite
@article{arxiv.cond-mat/0107491,
title = {Fast relaxation time in a spin model with glassy behavior},
author = {Giancarlo Franzese},
journal= {arXiv preprint arXiv:cond-mat/0107491},
year = {2016}
}
Comments
10 pages, 4 figures