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.

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收藏

页码：784 / 790

页数：7

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