Exponential Distributions of Collective Flow-Event Properties in Viscous Liquid Dynamics

被引：15

作者：

Bailey, Nicholas P. ^{[1
]}

Schroder, Thomas B. ^{[1
]}

Dyre, Jeppe C. ^{[1
]}

机构：

[1] Roskilde Univ Ctr, DNRF Ctr Glass & Time, Dept Sci, DK-4000 Roskilde, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

POTENTIAL-ENERGY LANDSCAPE; SUPERCOOLED LIQUIDS; GLASS-TRANSITION; MODEL; REARRANGEMENTS; FLUCTUATIONS; TEMPERATURE;

D O I：

10.1103/PhysRevLett.102.055701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the statistics of flow events in the inherent dynamics in supercooled two- and three-dimensional binary Lennard-Jones liquids. Distributions of changes of the collective quantities energy, pressure, and shear stress become exponential at low temperatures, as does that of the event "size'' S Sigma d(i)(2). We show how the S distribution controls the others, while itself following from exponential tails in the distributions of (1) single particle displacements d, involving a Lindemann-like length d(L) and (2) the number of active particles (with d > d(L)).

引用

页数：4

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