On the inviscid limit of the singular stochastic complex Ginzburg-Landau equation at statistical equilibrium

Abstract

We study the limiting behavior of the two-dimensional singular stochastic stochastic cubic nonlinear complex Ginzburg-Landau with Gibbs measure initial data. We show that in the appropriate small viscosity and small noise regimes, the limiting dynamics is given by the deterministic cubic nonlinear Schr\"odinger equation at Gibbs equilibrium. In order to obtain this convergence, our approach combines both heat and Schr\"odinger analysis, within the framework of the Fourier restriction norm method of Bourgain (1993).