Two-dimensional Granular Gas of Inelastic Spheres with Multiplicative   Driving
  We study a two-dimensional granular gas of inelastic spheres subject to multiplicative driving proportional to a power $|v(\vec{x})|^{\delta}$ of the local particle velocity $v(\vec{x})$. The steady state properties of the model are examined for different values of $\delta$, and compared with the homogeneous case $\delta=0$. A driving linearly proportional to $v(\vec{x})$ seems to reproduce some experimental observations which could not be reproduced by a homogeneous driving. Furthermore, we obtain that the system can be homogenized even for strong dissipation, if a driving inversely proportional to 
Raffaele Cafiero (1), Stefan Luding (2), and Hans J\"urgen Herrmann   (1,2) ((1) ESPCI, PMMH, Paris, France, (2) ICA1, Stutt...