Slow dynamics in condensed mater : spinodal decomposition

简要回顾了我们最近在描述二元流体大调幅节分解的连续介质模型的计算机研究方面所做的工作，该模型定量地解释了相应的实验结果。然后我们转到讨论玻璃化转变的问题。首先，我们考虑了脆性玻璃成形器中的TE超低模，用描述连续平移对称性自发破缺引起的空间非均质结构的缓慢弛豫的相动力学来解释这种模的扩散行为。接下来，我们提出了一个过冷液体密度涨落的随机模型，并将其映射到便于蒙特卡罗模拟研究的某个动力学格子气体模型上。

A brief review is presented bout our recent work on computer studies of a continuum model describig spinodal decomposition of binary fluid, which quantitatively accouts for corresponding experimental results. We then switch over to discussing problems of glass transitions. First we consider te ultraslow mode odbserved in fragile glass-formers, where the diffusive behavior of this mode is explained in terms of phase dynamics describing slow relaxation of spatial, heterrogeneous structure resulting from spontaneous break-down of continuous translational symmetry. Next we present a stochastic modelfor density fluctuation in supercooled liquids, which is mapped onto a certain kinetic lattice gas model which is convbenient for Monte Carlo simulation studies.