Are there localized saddles behind the heterogeneous dynamics of supercooled liquids?

被引：27
|
作者：
Coslovich, D.
Pastore, G.
机构：
[1] Univ Trieste, Dipartimento Fis Teor, I-34100 Trieste, Italy
[2] CNR INFM Democritos Natl Simulat Ctr, I-34014 Trieste, Italy
来源：
EUROPHYSICS LETTERS | 2006年 / 75卷 / 05期
关键词：
D O I：
10.1209/epl/i2006-10175-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We numerically study the interplay between heterogeneous dynamics and properties of negatively curved regions of the potential energy surface in a model glassy system. We find that the unstable modes of saddles and quasi-saddles undergo a localization transition close to the Mode-Coupling critical temperature. We also find evidence of a positive spatial correlation between clusters of particles having large displacements in the unstable modes and dynamical heterogeneities.
引用
收藏
页码：784 / 790
页数：7
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