Nader Masmoudi: Recent Advances in Nonlinear Inviscid Damping (Dec. 4, 2025)

Inviscid damping refers to the long-time decay of velocity perturbations in an ideal fluid, even though there’s no viscosity to dissipate the energy. This phenomenon is similar to the Landau damping in plasma physics. We review some old results and give some more recent advances about nonlinear inviscid damping. In particular, we will discuss the extension of the original result to more general shear flows. We will also discuss the optimality of the regularity spaces involved in some results by showing instability constructions. Joint results with J. Bedrossian, Yu Deng, Weiren Zhao. For more information go here: https://www.simonsfoundation.org/even...