Creep via dynamical functional renormalization group

被引:61
作者
Chauve, P
Giamarchi, T
Le Doussal, P
机构
[1] Univ Paris Sud, Phys Solides Lab, CNRS URA 02, F-91405 Orsay, France
[2] Ecole Normale Super, CNRS, Phys Theor Lab, F-75231 Paris, France
来源
EUROPHYSICS LETTERS | 1998年 / 44卷 / 01期
关键词
D O I
10.1209/epl/i1998-00443-7
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study a D-dimensional interface driven in a disordered medium. We derive finite-temperature and velocity functional renormalization group (FRG) equations, valid ill a epsilon = 4 - D expansion. These equations allow in principle for a complete study of the velocity v vs. applied force density f characteristics. We focus here on the creep regime at finite temperature and small velocity. We show how the FRG approach gives the form of the v-f characteristics sn this regime, and in particular the creep exponent, obtained previously only through phenomenological scaling arguments.
引用
收藏
页码:110 / 115
页数:6
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