title: Exponential velocity tails in a driven inelastic Maxwell model.
abstract: 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))].
authors.affiliation: Department of Physics, University of Geneva, CH 1211 Geneva 4, Switzerland. Tibor.Antal@physics.unige.ch
authors.forename: T
authors.initials: T
authors.lastname: Antal
authors.forename: Michel
authors.initials: M
authors.lastname: Droz
authors.forename: Adam
authors.initials: A
authors.lastname: Lipowski