arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0708.0760cond-mat.stat-mechcond-mat.soft
收藏

玻璃形成体原子模型中交换时间和存留时间的解耦

De-coupling of Exchange and Persistence Times in Atomistic Models of Glass Formers

Lester O. Hedges, Lutz Maibaum, David Chandler, Juan P. Garrahan

摘要:

利用分子动力学模拟的经典粒子的流体混合物与成对添加剂Weeks-Chandler-Andersen势相互作用,我们考虑的时间序列的粒子位移,从而确定分布的本地持久时间和本地交换时间。玻璃动力学的这些基本特征的研究在一系列的过冷条件下,并示出有行为,最显着的解耦,类似于那些在动力学约束的晶格模型的结构玻璃。注意到了所涉问题。

英文摘要:

With molecular dynamics simulations of a fluid mixture of classical particles interacting with pair-wise additive Weeks-Chandler-Andersen potentials, we consider the time series of particle displacements and thereby determine distributions for local persistence times and local exchange times. These basic characterizations of glassy dynamics are studied over a range of super-cooled conditions and shown to have behaviors, most notably de-coupling, similar to those found in kinetically constrained lattice models of structural glasses. Implications are noted.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑