Intermittency in aging
Abstract
The fluctuation-dissipation relation (FDR) is measured on the dielectric properties of a gel (Laponite) and of a polymer glass (polycarbonate). For the gel it is found that during the transition from a fluid-like to a solid-like state the fluctuation dissipation theorem is strongly violated. The amplitude and the persistence time of this violation are decreasing functions of frequency. Around it may persist for several hours. A very similar behavior is observed in polycarbonate after a quench below the glass transition temperature. In both cases the origin of this violation is a highly intermittent dynamics characterized by large fluctuations. The relevance of these results for recent models of aging are discussed.
Cite
@article{arxiv.cond-mat/0210490,
title = {Intermittency in aging},
author = {L. Buisson and L. Bellon and S. Ciliberto},
journal= {arXiv preprint arXiv:cond-mat/0210490},
year = {2016}
}
Comments
Proceedings of "III workshop on non equilibrium phenomena" (Pisa 2002)