Dynamical Exchanges in Facilitated Models of Supercooled liquids

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dc.creatorJung, YounJoon
dc.creatorGarrahan, Juan P.
dc.creatorChandler, David
dc.date2005-04-20
dc.date2005-09-01
dc.date.accessioned2026-07-07T03:04:50Z
dc.date.available2026-07-07T03:04:50Z
dc.descriptionWe investigate statistics of dynamical exchange events in coarse--grained models of supercooled liquids in spatial dimensions $d=1$, 2, and 3. The models, based upon the concept of dynamical facilitation, capture generic features of statistics of exchange times and persistence times. Here, distributions for both times are related, and calculated for cases of strong and fragile glass formers over a range of temperatures. Exchange time distributions are shown to be particularly sensitive to the model parameters and dimensions, and exhibit more structured and richer behavior than persistence time distributions. Mean exchange times are shown to be Arrhenius, regardless of models and spatial dimensions. Specifically, $<t_{\rm x}> \sim c^{-2}$, with $c$ being the excitation concentration. Different dynamical exchange processes are identified and characterized from the underlying trajectories. We discuss experimental possibilities to test some of our theoretical findings.
dc.description11 pages, 14 figures, minor corrections made, paper published in Journal of Chemical Physics
dc.identifierhttps://arxiv.org/abs/cond-mat/0504535
dc.identifierhttp://arxiv.org/abs/cond-mat/0504535
dc.identifierTHE JOURNAL OF CHEMICAL PHYSICS vol. 123, article no. 084509 (2005)
dc.identifierdoi:10.1063/1.2001629
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26238
dc.subjectStatistical Mechanics
dc.subjectDisordered Systems and Neural Networks
dc.titleDynamical Exchanges in Facilitated Models of Supercooled liquids
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