Special Session 4: Control and Optimization

Invariant measure for the 2D stochastic damped Euler equations

Hakima Bessaih
University of Wyoming
USA
Co-Author(s):    Benedetta Ferrario
Abstract:
We study the two-dimensional Euler equations, damped by a linear term and driven by an additive noise. The existence of weak solutions and their pathwise uniqueness is known for solutions that have bounded vorticity. The space of bounded vorticity endowed with the strong topology is not separable and the classical theory of Markov processes can`t be applied. Using the weak star topology, we prove the Markov property and then the existence of an invariant measure by means of a Krylov-Bogoliubov`s type method.