Friday October 3rd we will have two Colloquium talks

The first one will be delivered by Dr. Yunhui He (https://www.math.uh.edu/~yhe43/), University of Houston, invited by Dr. Helen Li, at 2:00 PM in Fretwell 315.

Abstract: This talk explores advanced numerical techniques, multigrid methods and acceleration strategies, for solving partial differential equations (PDEs) and nonsmooth optimization problems.

The second one will be delivered by Dr. Toan T. Nguyen (https://sites.psu.edu/nguyen/homepage/), Pennsylvania State University, invited by Dr. Loc Nguyen, at 3:00 PM in Fretwell 315.

Abstract: In the collisionless Vlasov theory of excited electrons, plasmas oscillations arise due to their long-range meanfield interaction, and the classical Landau damping concerns decay of such an oscillation. While the damping mechanism is exponentially fast by phase mixing for short-wave perturbations, it’s extremely slow or not available for long-wave perturbations (i.e. oscillations may survive and remain as a Klein-Gordon dispersive wave). This talk aims to provide an overview, as well as, recent advances on nonlinear Landau damping, focusing on the plasma oscillation regime.