Single-Particle Dynamics in Dense Granular Fluids under Driving

Details Single-Particle Dynamics in Dense Granular Fluids under Driving Single-Particle Dynamics in Dense Granular Fluids under Driving

2012-01-27

arxiv.org/abs/1201.5775v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 6 figures, submitted

Scientific paper

We present a mode-coupling theory for the dynamics of a tagged particle in a driven granular fluid close to the glass transition. The mean-squared displacement is shown to exhibit a plateau indicating structural arrest. In contrast to elastic hard-sphere fluids, which are solely controlled by volume fraction, the localisation length as well as the critical dynamics depend on the degree of dissipation, parametrized by the coefficient of normal restitution epsilon. Hence the resulting glassy structure as well as the critical dynamics are nonuniversal with respect to epsilon.

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