On the study of collective dynamics in supercooled liquids through the statistics of the isoconfigurational ensemble

摘要

The use of the isoconfigurational ensemble to explore structure-dynamic correlations in supercooled liquids is examined.The statistical error of the dynamic propensity and its spatial distribution are determined.The authors present the spatial distribution of the particle non-Gaussian parameter as a measure of the intermittency with which particles exhibit their propensity for motion.The ensemble average of the direction of particle motion is introduced to establish the anisotropy of the dynamic propensity.