{ "id": "1102.5467", "version": "v1", "published": "2011-02-27T02:03:36.000Z", "updated": "2011-02-27T02:03:36.000Z", "title": "Riesz transforms associated with Schrödinger operators acting on weighted Hardy spaces", "authors": [ "Hua Wang" ], "comment": "17 pages", "categories": [ "math.CA" ], "abstract": "Let $L=-\\Delta+V$ be a Schr\\\"odinger operator acting on $L^2(\\mathbb R^n)$, $n\\ge1$, where $V\\not\\equiv 0$ is a nonnegative locally integrable function on $\\mathbb R^n$. In this article, we will introduce weighted Hardy spaces $H^p_L(w)$ associated with $L$ by means of the area integral function and study their atomic decomposition theory. We also show that the Riesz transform $\\nabla L^{-1/2}$ associated with $L$ is bounded from our new space $H^p_L(w)$ to the classical weighted Hardy space $H^p(w)$ when $\\frac{n}{n+1}