Global well-posedness theory for the spatially inhomogeneous Boltzmann equation without angular cutoff [Existence globale pour l'équation de Boltzmann sans troncature]

摘要

We present the first global well-posedness result for the Boltzmann equation without angular cutoff in the framework of weighted Sobolev spaces, in a close to equilibrium framework, and for Maxwellian molecules. These solutions become smooth for any positive time. An important ingredient of the proof rests on the introduction of a new norm, encoding both the singularity and the dissipation properties of the linearized collision operator.