Multi-Center Vector Field Methods for Wave Equations

作者：Soffer Avy; Xiao Jianguo^*

来源：Mathematical Physics, Analysis and Geometry, 2016, 19(4): 22.

DOI：10.1007/s11040-016-9226-9

• Vector field methods
• Generalized Morawetz estimates
• Time dependent potentials
• Nonlinear dynamics

We develop the method of vector-fields to further study Dispersive Wave Equations. Radial vector fields are used to get a-priori estimates such as the Morawetz estimate on solutions of Dispersive Wave Equations. A key to such estimates is the repulsiveness or nontrapping conditions on the flow corresponding to the wave equation. Thus this method is limited to potential perturbations which are repulsive, that is the radial derivative pointing away from the origin. In this work, we generalize this method to include potentials which are repulsive relative to a line in space (in three or higher dimensions), among other cases. This method is based on constructing multi-centered vector fields as multipliers, cancellation lemmas and energy localization.

• 出版日期2016
• 单位rutgers