Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:	朱湘禅研究员，应用数学研究所
Inviter:
Title:	Stochastic Navier-Stokes equations via convex integration
Time & Venue:	2022.11.18 11:40-13:00 南楼204 腾讯会议：991-7305-6661
Abstract:	In this talk I will talk about our recent work on the three dimensional stochastic Navier-Stokes equations via convex integration method. First we establish non-uniqueness in law, existence and non-uniqueness of probabilistically strong solutions and non-uniqueness of the associated Markov processes. Second we prove existence of infinitely many stationary solutions as well as ergodic stationary solutions to the stochastic Navier-Stokes and Euler equations. Moreover, we are able to make conclusions regarding the vanishing viscosity limit and the anomalous dissipation. Third we obtain global-in-time existence and non-uniqueness of probabilistically strong solutions to the three dimensional Navier-Stokes system driven by space-time white noise. In this setting, the convective term is ill-defined in the classical sense and probabilistic renormalization is required. Finally I will show the existence, non-uniqueness, non-Guassianity and non-unique ergodicity for singular quasi geostrophic equation in the critical and supercritical regime.