Summary
We consider a dynamical interacting particle system whose empirical distribution tends to the solution of a spatially homogeneous Boltzmann type equation, as the number of particles tends to infinity. These laws of large numbers were proved for the Maxwellian molecules by H. Tanaka [Tal] and for the hard spheres by A.S. Sznitman [Szl]. In the present paper we investigate the corresponding large deviations: the large deviation upper bound is obtained and, using convex analysis, a non-variational formulation of the rate function is given. Our results hold for Maxwellian molecules with a cutoff potential and for hard spheres.
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Léonard, C. On large deviations for particle systems associated with spatially homogeneous Boltzmann type equations. Probab. Th. Rel. Fields 101, 1–44 (1995). https://doi.org/10.1007/BF01192194
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DOI: https://doi.org/10.1007/BF01192194