# American Institute of Mathematical Sciences

May  2014, 34(5): 2261-2281. doi: 10.3934/dcds.2014.34.2261

## Scattering theory for the wave equation of a Hartree type in three space dimensions

 1 Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan

Received  December 2012 Revised  August 2013 Published  October 2013

The paper concerns a scattering problem of the wave equation of a Hartree type with small initial data with fast decay. The equation is $\partial_t^2 u - \Delta u = V_1(x)u+ (V_2\ast |u|^{p-1})u , \qquad t\in {\bf R}, \; x \in {\bf R}^3,$ where $p\ge 3, \; V_1(x)=O(|x|^{-\gamma_1})$ with $\gamma_1>0$ as $|x|\to\infty, \; V_2(x) = \pm |x|^{-\gamma_2}$ with $\gamma_2>0$. We prove the existence of scattering operators under almost optimal conditions on the potentials and initial data in terms of decay, using pointwise estimates. Our result generalizes the one by [14, 15] for the case $p=3$.
Citation: Kimitoshi Tsutaya. Scattering theory for the wave equation of a Hartree type in three space dimensions. Discrete & Continuous Dynamical Systems, 2014, 34 (5) : 2261-2281. doi: 10.3934/dcds.2014.34.2261
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