Random loose packing and an order parameter for the parking lot model
msra(2010)
摘要
We have obtained the random loose packing fraction of the parking lot model
(PLM) by taking the limit of infinite compactivity in the two-variable
statistical description of Tarjus and Viot for the PLM. The PLM is a stochastic
model of adsorption and desorption of particles on a substrate that have been
used as a model for compaction of granular materials. An order parameter $\rho$
is introduced to characterize how far from a steady state situation the model
is. Thus, configurations with $\rho<1$ age. We propose that $\rho$ can be a
starting point in order to stablish a connection between Edwards' statistical
mechanics and granular hydrodynamics.
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关键词
steady state,granular material,stochastic model,statistical mechanics
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