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arXiv 1812.09445math.AP
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三维立方聚焦NLS在凸形障碍物外的散射

Scattering for 3d cubic focusing NLS on the domain outside a convex obstacle revisited

Chengbin Xu, Tengfei Zhao, Jiqiang Zheng

摘要:

本文研究了具有Dirichlet边界条件的$\mathbb{R}^3$中凸障碍物外区域上的聚焦立方非线性薛定谔方程(NLS).利用Dodson和Murphy的论证以及Ivanovici和Lebeau建立的色散估计,我们重新讨论了Killip-Visan-Zhang基态下的散射结果,避免了使用浓度紧性。我们通过建立边界的局部光滑效应克服了聚焦情况下边界的困难。基于这种效应和相互作用的Morawetz估计,我们证明了解在一个大的时间间隔内衰减,这满足散射准则。

英文摘要:

In this article, we consider the focusing cubic nonlinear Schrödinger equation(NLS) in the exterior domain outside of a convex obstacle in $\mathbb{R}^3$ with Dirichlet boundary conditions. We revisit the scattering result below ground state of Killip-Visan-Zhang by utilizing Dodson and Murphy's argument and the dispersive estimate established by Ivanovici and Lebeau, which avoids using the concentration compactness. We conquer the difficulty of the boundary in the focusing case by establishing a local smoothing effect of the boundary. Based on this effect and the interaction Morawetz estimates, we prove the solution decays at a large time interval, which meets the scattering criterions.

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