L\'{e}vy driven linear and semilinear stochastic partial differential equations

Abstract

The goal of this paper is twofold. In the first part we will study L\'{e}vy white noise in different distributional spaces and solve equations of the type $p(D)s=q(D)\dot{L}$, where $p$ and $q$ are polynomials. Furthermore, we will study measurability of $s$ in Besov spaces. By using this result we will prove that stochastic partial differential equations of the form \begin{align*} p(D)u=g(\cdot,u)+\dot{L} \end{align*} have measurable solutions in weighted Besov spaces, where $p(D)$ is a partial differential operator in a certain class, $g:\mathbb{R}^d\times \mathbb{C}\to \mathbb{R}$ satisfies some Lipschitz condition and $\dot{L}$ is a L\'{e}vy white noise.