Signatures of Dynamical Heterogeneity in the Structure of Glassy Free-Energy Minima

Chaudhuri, Pinaki and Karmakar, Smarajit and Dasgupta, Chandan (2008) Signatures of Dynamical Heterogeneity in the Structure of Glassy Free-Energy Minima. In: Physical Review Letters, 100 (12). 125701-1-125701-4.

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Abstract

From numerical minimization of a model free-energy functional for a system of hard spheres, we show that the width of the local peaks of the time-averaged density field at a glassy free-energy minimum exhibits large spatial variation, similar to that of the "local Debye-Waller factor" in simulations of dynamical heterogeneity. Molecular dynamics simulations starting from a particle configuration generated from the density distribution at a glassy free-energy minimum show similar spatial heterogeneity in the degree of localization, implying a direct connection between dynamical heterogeneity and the structure of glassy free-energy minima.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	06 Aug 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15480

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