Landau damping on the torus for the Vlasov-Poisson system with massless electrons

This paper studies the nonlinear Landau damping on the torus Td for the Vlasov-Poisson system with massless electrons (VPME). We consider solutions with analytic or Gevrey (gamma > 1/3) initial data, close to a homogeneous equilibrium satisfying a Penrose stability condition. We show that for such solutions, the corresponding density and force field decay exponentially fast as time goes to infinity. This work extends the results for Vlasov-Poisson on the torus to the case of ions and, more generally, to arbitrary analytic nonlinear couplings.(c) 2023 The Authors. Published by Elsevier Inc.