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arXiv 0910.1795math.APmath-phmath.CAmath.MP
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平坦欧氏锥上薛定谔方程的基本解和Schehartz估计

The fundamental solution and Strichartz estimates for the Schrödinger equation on flat euclidean cones

G. Austin Ford

摘要:

本文研究了截面半径为$ρ> 0$的平面欧氏锥$\mathbb{R}_+ \times \mathbb{S}^1_ρ$上的薛定谔方程,得到了基本解在锥点附近和径向无穷远处的渐近性.这些渐近展开保持一致,而接近的“几何前”,从正式应用的方法的图像,和“衍射前”出现的圆锥尖端的解决方案的一部分的交叉点。作为应用,我们证明了薛定谔传播算子在这类锥上的Schehartz估计。

英文摘要:

We study the Schrödinger equation on a flat euclidean cone $\mathbb{R}_+ \times \mathbb{S}^1_ρ$ of cross-sectional radius $ρ> 0$, developing asymptotics for the fundamental solution both in the regime near the cone point and at radial infinity. These asymptotic expansions remain uniform while approaching the intersection of the "geometric front", the part of the solution coming from formal application of the method of images, and the "diffractive front" emerging from the cone tip. As an application, we prove Strichartz estimates for the Schrödinger propagator on this class of cones.

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