Self-diffusion in sheared colloidal suspensions: violation of fluctuation-dissipation relation
Soft Condensed Matter
2009-11-10 v1 Statistical Mechanics
Abstract
Using memory-function formalism we show that in sheared colloidal suspensions the fluctuation-dissipation theorem for self-diffusion, i.e. Einstein's relation between self-diffusion and mobility tensors, is violated and propose a new way to measure this violation in Brownian Dynamics simulations. We derive mode-coupling expressions for the tagged particle friction tensor and for an effective, shear-rate dependent temperature.
Cite
@article{arxiv.cond-mat/0404689,
title = {Self-diffusion in sheared colloidal suspensions: violation of fluctuation-dissipation relation},
author = {Grzegorz Szamel},
journal= {arXiv preprint arXiv:cond-mat/0404689},
year = {2009}
}