Injected power and entropy flow in a heated granular gas
Statistical Mechanics
2007-05-23 v1
Abstract
Our interest goes to the power injected in a heated granular gas and to the possibility to interpret it in terms of entropy flow. We numerically determine the distribution of the injected power by means of Monte-Carlo simulations. Then, we provide a kinetic theory approach to the computation of such a distribution function. Finally, after showing why the injected power does not satisfy a Fluctuation Relation a la Gallavotti-Cohen, we put forward a new quantity which does fulfill such a relation, and is not only applicable in a variety of frameworks outside the granular world, but also experimentally accessible.
Cite
@article{arxiv.cond-mat/0509056,
title = {Injected power and entropy flow in a heated granular gas},
author = {P. Visco and A. Puglisi and A. Barrat and E. Trizac and F. van Wijland},
journal= {arXiv preprint arXiv:cond-mat/0509056},
year = {2007}
}
Comments
accepted in Europhys. Lett