Ultra-long-range dynamic correlations in a microscopic model for aging gels

Abstract : We use large-scale computer simulations to explore the non-equilibrium aging dynamics in a microscopic model for colloidal gels. We find that gelation resulting from a kinetically-arrested phase separation is accompanied by `anomalous' particle dynamics revealed by superdiffusive particle motion and compressed exponential relaxation of time correlation functions. Spatio-temporal analysis of the dynamics reveals intermittent heterogeneities producing spatial correlations over extremely large length scales. Our study is the first microscopically-resolved model reproducing all features of the spontaneous aging dynamics observed experimentally in soft materials.
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Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2017, 95, pp.060601. <10.1103/PhysRevE.95.060601>
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Soumis le : lundi 11 septembre 2017 - 10:55:57
Dernière modification le : mardi 12 septembre 2017 - 01:08:27

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Pinaki Chaudhuri, Ludovic Berthier. Ultra-long-range dynamic correlations in a microscopic model for aging gels. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2017, 95, pp.060601. <10.1103/PhysRevE.95.060601>. <hal-01585104>

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