The Vlasov-Poisson-Landau System with the Specular-Reflection Boundary Condition

Abstract

We consider the Vlasov-Poisson-Landau system, a classical model for a dilute collisional plasma interacting through Coulombic collisions and with its self-consistent electrostatic field. We establish global stability and well-posedness near the Maxwellian equilibrium state with decay in time and some regularity results for small initial perturbations, in any general bounded domain (including a torus as in a tokamak device), in the presence of specular reflection boundary condition. We provide a new improved $L^{2}\rightarrow L^{\infty }$ framework: $L^{2}$ energy estimate combines only with $S^{p}$ estimate for the ultra-parabolic equation.