Out-of-equilibrium generalized fluctuation-dissipation relations
Statistical Mechanics
2012-03-23 v1 Soft Condensed Matter
Abstract
We discuss fluctuation-dissipation relations valid under general conditions even out of equilibrium. The response function is expressed in terms of unperperturbed correlation functions, where contributions peculiar to non-equilibrium can appear. Such extra terms take into account the interaction among the relevant degrees of freedom in the system. We illustrate the general formalism with two examples: driven granular systems and anomalous diffusion on comb structures.
Cite
@article{arxiv.1203.4941,
title = {Out-of-equilibrium generalized fluctuation-dissipation relations},
author = {Giacomo Gradenigo and Andrea Puglisi and Alessandro Sarracino and Dario Villamaina and Angelo Vulpiani},
journal= {arXiv preprint arXiv:1203.4941},
year = {2012}
}
Comments
36 pages, 7 figures, Chapter in the book: R.Klages, W.Just, C.Jarzynski (Eds.), Nonequilibrium Statistical Physics of Small Systems: Fluctuation Relations and Beyond (Wiley-VCH, Weinheim, 2012; ISBN 978-3-527-41094-1)