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

Pinaki Chaudhuri; Smarajit Karmakar; Chandan Dasgupta

doi:10.1103/physrevlett.100.125701

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arXiv · 0711.4269

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

Pinaki Chaudhuri·Smarajit Karmakar·Chandan Dasgupta

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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.

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Pinaki Chaudhuri, Smarajit Karmakar, Chandan Dasgupta. 2007-11-27. Signatures of Dynamical Heterogeneity in the Structure of Glassy Free-energy Minima. https://doi.org/10.1103/physrevlett.100.125701

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