Analysis of multiscale methods for stochastic dynamical systems driven by $\alpha$-stable processes

Abstract

In this paper, we first analyze the strong and weak convergence of projective integration methods for multiscale stochastic dynamical systems driven by $\alpha$-stable processes, which are used to estimate the effect that the fast components have on slow ones. Then we obtain the $p$th moment error bounds between the solution of slow component produced by projective integration method and the solution of effective system with $p \in \left(1, \alpha\right)$. Finally, we corroborate our analytical results through a specific numerical example.