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.
@article{arxiv.1605.09770,
title = {Ultra-long-range dynamic correlations in a microscopic model for aging gels},
author = {Pinaki Chaudhuri and Ludovic Berthier},
journal= {arXiv preprint arXiv:1605.09770},
year = {2017}
}