Static and dynamical nonequilibrium fluctuations
arXiv:cond-mat/0612525 · doi:10.1016/j.crhy.2007.05.003
Abstract
Various notions of fluctuations exist depending on the way one chooses to measure them. We discuss two extreme cases (continuous measurement versus long inter-measurement times) and we see their relation with entropy production and with escape rates. A simple explanation of why the relative entropy satisfies a Hamilton-Jacobi equation is added.
10 pages