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Spatially heterogeneous dynamics in granular compaction

Alexandre Lefèvre·Ludovic Berthier·Robin Stinchcombe
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Abstract

We prove the emergence of spatially correlated dynamics in slowly compacting dense granular media by analyzing analytically and numerically multi-point correlation functions in a simple particle model characterized by slow non-equilibrium dynamics. We show that the logarithmically slow dynamics at large times is accompanied by spatially extended dynamic structures that resemble the ones observed in glass-forming liquids and dense colloidal suspensions. This suggests that dynamic heterogeneity is another key common feature present in very different jamming materials.

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Alexandre Lefèvre, Ludovic Berthier, Robin Stinchcombe. 2004-10-29. Spatially heterogeneous dynamics in granular compaction. https://doi.org/10.1103/physreve.72.010301

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