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Article Dans Une Revue Communications in Mathematical Physics Année : 2006

Rate of convergence to equilibrium for the spatially homogeneous Boltzmann equation with hard potentials

Résumé

For the spatially homogeneous Boltzmann equation with hard po- tentials and Grad's cutoff (e.g. hard spheres), we give quantitative estimates of exponential convergence to equilibrium, and we show that the rate of exponential decay is governed by the spectral gap for the linearized equation, on which we provide a lower bound. Our approach is based on establishing spectral gap-like estimates valid near the equilibrium, and then connecting the latter to the quantitative nonlinear theory. This leads us to an explicit study of the linearized Boltzmann collision operator in functional spaces larger than the usual linearization setting.
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Dates et versions

hal-00076709 , version 1 (26-05-2006)
hal-00076709 , version 2 (26-05-2006)

Identifiants

Citer

Clément Mouhot. Rate of convergence to equilibrium for the spatially homogeneous Boltzmann equation with hard potentials. Communications in Mathematical Physics, 2006, 261, pp.629-672. ⟨10.1007/s00220-005-1455-x⟩. ⟨hal-00076709v2⟩
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