Spatially heterogeneous dynamics in granular compaction

Details Spatially heterogeneous dynamics in granular compaction Spatially heterogeneous dynamics in granular compaction

2004-10-28

arxiv.org/abs/cond-mat/0410741v2

Phys. Rev. E 72, 016103 (2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevE.72.010301

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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