Free-volume kinetic models of granular matter

Details Free-volume kinetic models of granular matter Free-volume kinetic models of granular matter

2000-06-08

arxiv.org/abs/cond-mat/0006146v1

Phys. Rev. E 62, 7793 (2000).

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures

Scientific paper

10.1103/PhysRevE.62.7793

We show that the main dynamical features of granular media can be understood by means of simple models of fragile-glass forming liquid provided that gravity alone is taken into account. In such lattice-gas models of cohesionless and frictionless particles, the compaction and segregation phenomena appear as purely non-equilibrium effects unrelated to the Boltzmann-Gibbs measure which in this case is trivial. They provide a natural framework in which slow relaxation phenomena in granular and glassy systems can be explained in terms of a common microscopic mechanism given by a free-volume kinetic constraint.

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