A basis for the statistical mechanics of granular systems

Details A basis for the statistical mechanics of granular systems A basis for the statistical mechanics of granular systems

2005-03-02

arxiv.org/abs/cond-mat/0503057v1

Unifying Concepts in Granular Media and Glasses, Elsevier, Amsterdam, (2004)

Physics

Condensed Matter

Soft Condensed Matter

15 pages, 8 figures

Scientific paper

This paper aims to justify the use of statistical mechanics tools in situations where the system is out of equilibrium and jammed. Specifically, we derive a Boltzmann equation for a jammed granular system and show that the Boltzmann's analysis can be used to produce a ``Second Law'', $\dot{S}\ge 0$ for jammed systems. We highlight the fundamental questions in this area of physics and point to the key quantities in characterising a packing of particles, accessible through a novel experimentation method which we also present here.

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