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Global weak solutions for a nonlocal multispecies Fokker-Planck-Landau system

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arxiv 2305.17447 v2 pith:GY2RQ47O submitted 2023-05-27 math.AP

classification math.AP
keywords fokker-planck-landaumultispeciessystemequationsexistencesolutionsweakapproximation
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The global-in-time existence of weak solutions to a spatially homogeneous multispecies Fokker-Planck-Landau system for plasmas in the three-dimensional whole space is shown. The Fokker-Planck-Landau system is a simplification of the Landau equations assuming a linearized, velocity-independent, and isotropic kernel. The resulting equations depend nonlocally and nonlinearly on the moments of the distribution functions via the multispecies local Maxwellians. The existence proof is based on a three-level approximation scheme, energy and entropy estimates, as well as compactness results, and it holds for both soft and hard potentials.

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Cited by 1 Pith paper

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  1. A consistent non-linear Fokker-Planck model for a gas mixture of polyatomic molecules

    math.AP 2024-12 conditional novelty 6.0 of 10

    A non-linear Fokker-Planck model for polyatomic gas mixtures with two temperatures is constructed and proven to conserve mass, momentum, and energy and to satisfy an H-theorem.

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