| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9877670 | Physica D: Nonlinear Phenomena | 2005 | 14 Pages |
Abstract
The fluctuation-dissipation relation (FDR) is measured on the dielectric properties of a polymer glass (polycarbonate). It is observed that the fluctuation-dissipation theorem is strongly violated after a quench from above to below the glass transition temperature. The amplitude and the persistence time of this violation are decreasing functions of frequency. Around 1âHz, it may persist for several hours. The origin of this violation is a highly intermittent dynamics characterized by large fluctuations and strongly non-Gaussian statistics. The intermittent dynamics depends on the quenching rate and it disappears after slow quenches. The relevance of these results for recent models of aging are discussed.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
L. Buisson, S. Ciliberto,