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The Malgrange-Ehrenpreis theorem for nonlocal Schrödinger operators with certain potentials (1612.07143v1)

Published 15 Dec 2016 in math.CA and math.AP

Abstract: In this paper, we prove the Malgrange-Ehrenpreis theorem for nonlocal Schr\"odinger operators $L_K+V$ with nonnegative potentials $V\in Lq_{\loc}(\BRn)$ for $q>\f{n}{2s}$ with $0<s<1$ and $n\ge 2$; that is to say, we obtain the existence of a fundamental solution $\fe_V$ for $L_K+V$ satisfying \begin{equation*}\bigl(L_K+V\bigr)\fe_V=\dt_0\,\,\text{ in $\BRn$ }\end{equation*} in the distribution sense, where $\dt_0$ denotes the Dirac delta mass at the origin. In addition, we obtain a decay of the fundamental solution $\fe_V$.

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