# Convergence to self-similarity for the Boltzmann equation for strongly inelastic Maxwell molecules

### E. Terraneo

Department of Mathematics, University of Milano, via Saldini 50, 20133 Milano, Italy### G. Toscani

Department of Mathematics, University of Pavia, via Ferrata 1, 27100 Pavia, Italy### G. Furioli

University of Bergamo, viale Marconi 5, 24044 Dalmine, Italy### A. Pulvirenti

Department of Mathematics, University of Pavia, via Ferrata 1, 27100 Pavia, Italy

## Abstract

We prove propagation of regularity, uniformly in time, for the scaled solutions of the inelastic Maxwell model for any value of the coefficient of restitution. The result follows from the uniform in time control of the tails of the Fourier transform of the solution, normalized in order to have constant energy. By standard arguments this implies the convergence of the scaled solution towards the stationary state in Sobolev and $L^{1}$ norms in the case of regular initial data as well as the convergence of the original solution to the corresponding self-similar cooling state. In the case of weak inelasticity, similar results have been established by Carlen, Carrillo and Carvalho (2009) in [11] via a precise control of the growth of the Fisher information.

## Cite this article

E. Terraneo, G. Toscani, G. Furioli, A. Pulvirenti, Convergence to self-similarity for the Boltzmann equation for strongly inelastic Maxwell molecules. Ann. Inst. H. Poincaré Anal. Non Linéaire 27 (2010), no. 2, pp. 719–737

DOI 10.1016/J.ANIHPC.2009.11.005