Intermittent origin of the large violations of the fluctuation-dissipation relations in an aging polymer glass

被引：46

作者：

Buisson, L

Ciliberto, S

Garcimartín, A

机构：

[1] Ecole Normale Super Lyon, Phys Lab, CNRS, UMR 5672, F-69364 Lyon 07, France

[2] Univ Navarra, Dept Fis, Fac Ciencias, E-31080 Pamplona, Spain

来源：

EUROPHYSICS LETTERS | 2003年 / 63卷 / 04期

关键词：

D O I：

10.1209/epl/i2003-00551-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The fluctuation-dissipation relation (FDR) is measured on the dielectric properties of a polymer glass (polycarbonate) in the range 20 mHz-100 Hz. It is found that after a quench below the glass transition temperature, the fluctuation-dissipation theorem is strongly violated. The amplitude and the persistence time of this violation are decreasing functions of frequency. At frequencies larger than 1 Hz it persists for about 3 h. The origin of this violation is a highly intermittent dynamics characterized by large fluctuations. The relevance of these results for recent models of aging dynamics is discussed.

引用

页码：603 / 609

页数：7

共 22 条

[1] Monte Carlo simulations of the violation of the fluctuation-dissipation theorem in domain growth processes [J].