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arXiv · 2001.10228

Absorbing-state transitions in granular materials close to jamming

Christopher Ness·Michael E. Cates
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Abstract

We consider a model for driven particulate matter in which absorbing states can be reached both by particle isolation and by particle caging. The model predicts a non-equilibrium phase diagram in which analogues of hydrodynamic and elastic reversibility emerge at low and high volume fractions respectively, partially separated by a diffusive, non-absorbing region. We thus find a single phase boundary that spans the onset of chaos in sheared suspensions to the onset of yielding in jammed packings. This boundary has the properties of a non-equilibrium second order phase transition, leading us to write a Manna-like mean-field description that captures the model predictions. Dependent on contact details, jamming marks either a direct transition between the two absorbing states, or occurs within the diffusive region.

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Christopher Ness, Michael E. Cates. 2020-01-28. Absorbing-state transitions in granular materials close to jamming. https://doi.org/10.1103/physrevlett.124.088004

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