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Journal Article

Slow dynamics and precursors of the glass transition in granular fluids

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Zippelius,  Annette
Fellow Group Polymers, complex fluids and disordered systems, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Gholami, I., Fiege, A., & Zippelius, A. (2011). Slow dynamics and precursors of the glass transition in granular fluids. Physical Review E, 84: 031305, pp. 031305-1-031305-9.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-1167-C
Abstract
We use event driven simulations to analyze glassy dynamics as a function of density and energy dissipation in a two-dimensional bidisperse granular fluid under stationary conditions. Clear signatures of a glass transition are identified, such as an increase of relaxation times over several orders of magnitude. As the inelasticity is increased, the glass transition is shifted to higher densities, and the precursors of the transition become less and less pronounced, in agreement with a recent mode-coupling theory. We analyze the long-time tails of the velocity autocorrelation and discuss its consequences for the nonexistence of the diffusion constant in two dimensions.