Fluctuations and response of nonequilibrium states
Statistical Mechanics
2009-07-12 v3
Abstract
A generalized fluctuation-response relation is found for thermal systems driven out of equilibrium. Its derivation is independent of many details of the dynamics, which is only required to be first-order. The result gives a correction to the equilibrium fluctuation-dissipation theorem, in terms of the correlation between observable and excess in dynamical activity caused by the perturbation. Previous approaches to this problem are recovered and extended in a unifying scheme.
Cite
@article{arxiv.0902.3955,
title = {Fluctuations and response of nonequilibrium states},
author = {Marco Baiesi and Christian Maes and Bram Wynants},
journal= {arXiv preprint arXiv:0902.3955},
year = {2009}
}