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

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

2009-10-09

arxiv.org/abs/0910.1795v4

Comm. Math. Phys. 299 (2010), no. 2, 447-467

Mathematics

Analysis of PDEs

21 pages, 4 figures. Minor typos corrected. To be published in Comm. Math. Phys

Scientific paper

10.1007/s00220-010-1050-7

We study the Schr\"odinger equation on a flat euclidean cone $\mathbb{R}_+ \times \mathbb{S}^1_\rho$ of cross-sectional radius $\rho > 0$, 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 Schr\"odinger propagator on this class of cones.

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