Strong convergence of averaging principle for the non‐autonomous slow‐fast systems of SPDEs with polynomial growth

摘要

In this work, we study a class of non‐autonomous two‐time‐scale stochastic reaction‐diffusion equations driven by Poisson random measures, in which the coefficients satisfy the polynomial growth condition and local Lipschitz condition. First, the existence and uniqueness of the mild solution are proved by constructing auxiliary equations and using the technique of stopping time. Then, consider that the time dependent of the coefficients, the averaged equation is redefined by studying the existence of time‐dependent evolution family of measures associated with the frozen fast equation. Further, the slow component that strongly converges to the solution of the corresponding averaged equation is verified by using the classical Khasminskii method.