Sun, 27 Jul 2008 09:11:37 BST CiteULike: weeks's Widmer-Cooper http://www.citeulike.org/user/weeks/author/Widmer-Cooper CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/weeks/article/2386431 <i>Journal of Physics: Condensed Matter, Vol. 17, No. 49. (2005), pp. S4025-S4034.</i><br /><br />We present the dynamic propensity distribution as an explicit measure of the degree to which the dynamics in a liquid over the time scale of structural relaxation is determined by the initial configuration. We then examine, for a binary mixture of soft discs in two dimensions, the correlation between the spatial distribution of propensity and that of two local measures of configuration structure: the local composition and local free volume. While the small particles dominate the high propensity population, we find no strong correlation between either the local composition or the local free volume and the propensity. It is argued that this is a generic failure of purely local structural measures to capture the inherently non-local character of collective behaviour. On the relationship between structure and dynamics in a supercooled liquid Asaph Widmer-Cooper Peter Harrowell doi:10.1088/0953-8984/17/49/001 Journal of Physics: Condensed Matter, Vol. 17, No. 49. (2005), pp. S4025-S4034. 2008-02-15T14:48:10-00:00 2005 Journal of Physics: Condensed Matter 17 49 S4025 S4034 dyn-het journal-club structure http://www.citeulike.org/user/weeks/article/1706384 <i>Physical Review Letters, Vol. 93, No. 13. (2004), pp. 135701-135701.</i><br /><br />The particle dynamics in a liquid exhibits a transient spatial distribution of dynamic heterogeneities. The relationship between this kinetic structure and the underlying particle configuration remains an outstanding problem. In this Letter, we present a general simulation technique for identifying the features of the dynamic heterogeneity which arise due to a specific configuration, as distinct from the random spatial variation due to the intermittent particle dynamics. How Reproducible Are Dynamic Heterogeneities in a Supercooled Liquid? Asaph Widmer-Cooper Peter Harrowell H Fynewever doi:10.1103/PhysRevLett.93.135701 Physical Review Letters, Vol. 93, No. 13. (2004), pp. 135701-135701. 2007-09-28T20:46:54-00:00 2004 Physical Review Letters 93 13 135701 135701 APS dyn-het journal-club