共形扰动与局部光滑
Conformal Perturbations and Local Smoothing
摘要:
本文研究了旋转曲面上的共形扰动对薛定谔方程的局部光顺效应的影响。本文用\cite{ChWu-lsm}研究了具有一个捕获轨道的旋转曲面上的薛定谔方程。这个陷阱附近的动力学是不稳定的,但退化。本文从度量$g$出发,考虑扰动度量$g_s = e^{sf}g$,其中$f$是光滑紧支撑函数.如果$s$足够小,并且$f$的许多导数满足适当的符号估计,那么我们证明了局部平滑估计仍然成立。
英文摘要:
The purpose of this paper is to study the effect of conformal perturbations on the local smoothing effect for the Schrödinger equation on surfaces of revolution. The paper \cite{ChWu-lsm} studied the Schrödinger equation on surfaces of revolution with one trapped orbit. The dynamics near this trapping were unstable, but degenerately so. Beginning from the metric $g$ from this paper, we consider the perturbed metric $g_s = e^{sf}g$, where $f$ is a smooth, compactly supported function. If $s$ is small enough and finitely many derivatives of $f$ satisfy appropriate symbolic estimates, then we show that a local smoothing estimate still holds.
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