Thermodynamics and Statistical Mechanics of dense granular media

Details Thermodynamics and Statistical Mechanics of dense granular media Thermodynamics and Statistical Mechanics of dense granular media

2006-03-16

arxiv.org/abs/cond-mat/0603429v2

Physics

Condensed Matter

Statistical Mechanics

Supplementary Informations added

Scientific paper

10.1103/PhysRevLett.97.158001

By detailed Molecular Dynamics and Monte Carlo simulations %of a realistic model we show that granular materials at rest can be described as thermodynamics systems. First we show that granular packs can be characterized by few parameters, as much as fluids or solids. Then, in a second independent step, we demonstrate that these states can be described in terms of equilibrium distributions which coincide with the Statistical Mechanics of powders first proposed by Edwards. We also derive the system equation of state as a function of the ``configurational temperature'', its new intensive thermodynamic parameter.

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