Critical fluctuations and breakdown of the Stokes-Einstein relation in the mode-coupling theory of glasses

被引：67
作者：
Biroli, Giulio
Bouchaud, Jean-Philippe
机构：
[1] CEA Saclay, Serv Phys Theor, F-91191 Gif Sur Yvette, France
[2] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[3] Capital Fund Management, Sci & Finance, F-75009 Paris, France
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 20期
关键词：
D O I：
10.1088/0953-8984/19/20/205101
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We argue that the critical dynamical fluctuations predicted by the mode-coupling theory ( MCT) of glasses provide a natural mechanism to explain the breakdown of the Stokes-Einstein relation. This breakdown, observed numerically and experimentally in a region where MCT should hold, is one of the major difficulties of the theory, for which we propose a natural resolution based on the recent interpretation of the MCT transition as a bona fide critical point with a diverging length scale. We also show that the upper critical dimension of MCT for liquids is dc = 8.
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页数：8
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