| Issue |
EPL
Volume 98, Number 2, April 2012
|
|
|---|---|---|
| Article Number | 28001 | |
| Number of page(s) | 6 | |
| Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
| DOI | https://doi.org/10.1209/0295-5075/98/28001 | |
| Published online | 24 April 2012 | |
Single-particle dynamics in dense granular fluids under driving
1
Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR) 51170 Köln, Germany, EU
2
Max-Planck-Institut für Dynamik und Selbstorganisation - Am Fassberg 17, 37077 Göttingen, Germany, EU
3
Georg-August-Universität Göttingen, Institut für Theoretische Physik - Friedrich-Hund-Platz 1, 37077 Göttingen, Germany, EU
Received:
24
January
2012
Accepted:
19
March
2012
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 ε. Hence the resulting glassy structure as well as the critical dynamics are nonuniversal with respect to ε.
PACS: 81.05.Rm – Porous materials; granular materials / 61.20.Lc – Time-dependent properties; relaxation / 64.70.P- – Glass transitions of specific systems
© EPLA, 2012
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