Anomalous diffusion of driven particles in supercooled liquids
Statistical Mechanics
2015-06-11 v2
Abstract
We have performed non-equilibrium dynamics simulations of a binary Lennard-Jones mixture in which an external force is applied on a single tagged particle. For the diffusive properties of this particle parallel to the force superdiffusive behavior at intermediate times as well as giant long-time diffusivity is observed. A quantitative description of this non-trivial behavior is given by a continuous time random walk analysis of the system in configuration space. We further demonstrate, that the same physical properties which are responsible for the superdiffusivity in non-equilibrium systems also determine the non-Gaussian parameter in equilibrium systems.
Cite
@article{arxiv.1210.1081,
title = {Anomalous diffusion of driven particles in supercooled liquids},
author = {Carsten F. E. Schroer and Andreas Heuer},
journal= {arXiv preprint arXiv:1210.1081},
year = {2015}
}