On characterization of the sharp Strichartz inequality for the Schrödinger Equation

Abstract

In this paper, we study the extremal problem for the Strichartz inequality for the Schrödinger equation on the $\mathbb{R}\times {\mathbb{R}}^2$; we provide a new proof to the characterization of the extremal functions. The only extremal functions are Gaussian functions up to the natural symmetry of the Strichartz inequality, which was investigated previously by Foschi \cite{Foschi:2007:maxi-strichartz-2d} and Hundertmark-Zharnitsky \cite{Hundertmark-Zharnitsky:2006:maximizers-Strichartz-low-dimensions}.

10 pages. Some typos have been corrected

References in corpus (1)

• On Restricting Cauchy-Pexider Equations to Submanifolds

Cited by in corpus (1)

• On sharp bilinear Strichartz estimates of Ozawa-Tsutsumi type