Connected Network of Minima as a Model Glass: Long Time Dynamics
Disordered Systems and Neural Networks
2009-10-31 v2 Soft Condensed Matter
Abstract
A simple model to investigate the long time dynamics of glass-formers is presented and applied to study a Lennard-Jones system in supercooled and glassy phases. According to our model, the point representing the system in the configurational phase space performs harmonic vibrations around (and activated jumps between) minima pertaining to a connected network. Exploiting the model, in agreement with the experimental results, we find evidence for: i) stretched relaxational dynamics; ii) a strong T-dependence of the stretching parameter; iii) breakdown of the Stokes-Einstein law.
Cite
@article{arxiv.cond-mat/9803165,
title = {Connected Network of Minima as a Model Glass: Long Time Dynamics},
author = {Luca Angelani and Giorgio Parisi and Giancarlo Ruocco and Gabriele Viliani},
journal= {arXiv preprint arXiv:cond-mat/9803165},
year = {2009}
}
Comments
4 pages (Latex), 4 eps figures