%0 Journal Article
%T Dynamic facilitation explains democratic particle motion of metabasin transitions
%A Lester O. Hedges
%A Juan P. Garrahan
%J Mathematics
%D 2007
%I arXiv
%R 10.1088/1751-8113/41/32/324006
%X Transitions between metabasins in supercooled liquids seem to occur through rapid "democratic" collective particle rearrangements. Here we show that this apparent homogeneous particle motion is a direct consequence of dynamic facilitation. We do so by studying metabasin transitions in facilitated spin models and constrained lattice gases. We find that metabasin transitions occur through a sequence of locally facilitated events taking place over a relatively short time frame. When observed on small enough spatial windows these events appear sudden and homogeneous. Our results indicate that metabasin transitions are essentially "non-democratic" in origin and yet another manifestation of dynamical heterogeneity in glass formers.
%U http://arxiv.org/abs/0706.0902v2