Heat fluctuations in an out of equilibrium bath
Statistical Mechanics
2011-04-13 v2
Abstract
We measure the energy fluctuations of a Brownian particle confined by an optical trap in an aging gelatin after a very fast quench (less than 1 ms). The strong nonequilibrium fluctuations due to the assemblage of the gel, are interpreted, within the framework of fluctuation theorem, as a heat flux from the particle towards the bath. We derive, from a simple model, an analytical expression of the heat probability distribution, which fits the experimental data and satisfies a fluctuation relation similar to that of a system in contact with two baths at different temperatures.
Keywords
Cite
@article{arxiv.1102.4750,
title = {Heat fluctuations in an out of equilibrium bath},
author = {Juan Ruben Gomez-Solano and Artyom Petrosyan and Sergio Ciliberto},
journal= {arXiv preprint arXiv:1102.4750},
year = {2011}
}