Abstract
The basic question about the existence, uniqueness, and stability of the Boltzmann equation in general non-convex domains with the specular reflection boundary condition has been widely open. In this paper, we consider cylindrical domains whose cross section is generally non-convex analytic bounded planar domain. We establish a global well-posedness and asymptotic stability of the Boltzmann equation with the specular reflection boundary condition. Our method consists of the delicate construction of \({\epsilon}\)-tubular neighborhoods of billiard trajectories which bounce infinitely many times or hit the boundary tangentially at some moment, and sharp estimates of the size of such neighborhoods.
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Communicated by C. Mouhot
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Kim, C., Lee, D. Decay of the Boltzmann Equation with the Specular Boundary Condition in Non-convex Cylindrical Domains. Arch Rational Mech Anal 230, 49–123 (2018). https://doi.org/10.1007/s00205-018-1241-5
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DOI: https://doi.org/10.1007/s00205-018-1241-5