From Vlasov-Maxwell-Boltzmann system to two-fluid incompressible Navier-Stokes-Fourier-Maxwell system with Ohm’s law: convergence for classical solutions

We consider the two-species Vlasov-Maxwell-Boltzmann (VMB) system with the scaling under which the moments of the fluctuations to the global Maxwellians formally converge to two-fluid incompressible Navier-Stokes-Fourier-Maxwell (NSFM) system with Ohm’s law. We prove the uniform estimates with respect to Knudsen number \(\varepsilon \) for the fluctuations by employing two types of micro-macro decompositions, and furthermore a hidden damping effect from the microscopic Ohm’s law. As consequences, the existence of the global-in-time classical solutions of VMB with all \(\varepsilon \in (0,1]\) is established. Moreover, the convergence of the fluctuations of the solutions of VMB to the classical solutions of NSFM with Ohm’s law is rigorously justified. This limit was justified in the recent breakthrough of Arsénio and Saint-Raymond (From the Vlasov-Maxwell-Boltzmann system to incompressible viscous electro-magneto-hydrodynamics. Vol. 1. EMS Monographs in Mathematics, European Mathematical Society (EMS), Zürich, 2019) from renormalized solutions of VMB to dissipative solutions of incompressible viscous electro-magneto-hydrodynamics under the suitable scalings. In this sense, our result provides a classical solution analogue of the corresponding limit in Arsénio and Saint-Raymond (From the Vlasov-Maxwell-Boltzmann system to incompressible viscous electro-magneto-hydrodynamics. Vol. 1. EMS Monographs in Mathematics, European Mathematical Society (EMS), Zürich, 2019) .