Long-time tails and cage effect in driven granular fluids
Statistical Mechanics
2011-10-05 v2 Soft Condensed Matter
Abstract
We study the velocity autocorrelation function (VACF) of a driven granular fluid in the stationary state in 3 dimensions. As the critical volume fraction of the glass transition in the corresponding elastic system is approached, we observe pronounced cage effects in the VACF as well as a strong decrease of the diffusion constant. At moderate densities the VACF is shown to decay algebraically in time (t^{-3/2}) like in a molecular fluid, as long as the driving conserves momentum locally.
Keywords
Cite
@article{arxiv.0809.4432,
title = {Long-time tails and cage effect in driven granular fluids},
author = {Andrea Fiege and Timo Aspelmeier and Annette Zippelius},
journal= {arXiv preprint arXiv:0809.4432},
year = {2011}
}
Comments
4 pages, 4 figures