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Entropic origin of the growth of relaxation times in simple glassy liquids

Dasgupta, Chandan and Valls, Oriol T (1998) Entropic origin of the growth of relaxation times in simple glassy liquids. In: Physical Review, 58 (01). pp. 801-804.

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Official URL: http://prola.aps.org/abstract/PRE/v58/i1/p801_1

Abstract

Transitions between "glassy" local minima of a model free-energy functional for a dense hard-sphere system are studied numerically using a "microcanonical" Monte Carlo method that enables us to obtain the transition probability as a function of the free energy and the Monte Carlo "time." The growth of the height of the effective free-energy barrier with density is found to be consistent with a Vogel-Fulcher law. The dependence of the transition probability on time indicates that this growth is primarily due to an increase in the difficulty of finding low-free-energy paths to other minima.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 15 Jul 2009 10:14
Last Modified: 19 Sep 2010 05:24
URI: http://eprints.iisc.ernet.in/id/eprint/18568

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