Glassy dynamics in granular compaction

TL;DR

This paper investigates how slow cooperative dynamics influence the densification process in granular materials, highlighting that achieving high packing fractions depends on the relaxation of collective structures.

Contribution

Introduces two models demonstrating the role of slow cooperative relaxation in granular compaction, advancing understanding of dense packing mechanisms.

Findings

High packing fractions require slow relaxation of cooperative structures.

Both models show the importance of slow dynamics in reaching dense states.

Ongoing work aims to explore broader implications of these results.

Abstract

Two models are presented to study the influence of slow dynamics on granular compaction. It is found in both cases that high values of packing fraction are achieved only by the slow relaxation of cooperative structures. Ongoing work to study the full implications of these results is discussed.