Exponential velocity tails in a driven inelastic Maxwell model.
The problem of the steady-state velocity distribution in a driven inelastic Maxwell model of shaken granular material is revisited. Numerical solution of the master equation and analytical arguments show that the model has bilateral exponential velocity tails [P(v) approximately e(-|v|/sqrt[D])], where D is the amplitude of the noise. Previous study of this model predicted Gaussian tails [P(v) approximately e(-av(2))].
Antal
T
T
Department of Physics, University of Geneva, CH 1211 Geneva 4, Switzerland. Tibor.Antal@physics.unige.ch
Droz
Michel
M
Lipowski
Adam
A