Scaling Solutions of Inelastic Boltzmann Equations with Over-populated High Energy Tails

Details Scaling Solutions of Inelastic Boltzmann Equations with Over-populated High Energy Tails Scaling Solutions of Inelastic Boltzmann Equations with Over-populated High Energy Tails

2001-12-21

arxiv.org/abs/cond-mat/0112417v3

Physics

Condensed Matter

Statistical Mechanics

15 pages, 4 figures. Accepted in J. Statistical Physics

Scientific paper

This paper deals with solutions of the nonlinear Boltzmann equation for spatially uniform freely cooling inelastic Maxwell models for large times and for large velocities, and the nonuniform convergence to these limits. We demonstrate how the velocity distribution approaches in the scaling limit to a similarity solution with a power law tail for general classes of initial conditions and derive a transcendental equation from which the exponents in the tails can be calculated. Moreover on the basis of the available analytic and numerical results for inelastic hard spheres and inelastic Maxwell models we formulate a conjecture on the approach of the velocity distribution function to a scaling form.

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