Orthogonal Polynomials and Sharp Estimates for the Schrödinger Equation
Orthogonal Polynomials and Sharp Estimates for the Schrödinger Equation
复制标题
薛定谔方程的正交多项式和锐估计
DOI:
10.1093/imrn/rnx200
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发表时间:
2019
影响因子:
1
通讯作者:
Felipe Gonçalves
中科院分区:
文献类型:
--
作者:
Felipe Gonçalves
In this paper we study sharp estimates for the Schr\"odinger operator via the framework of orthogonal polynomials. We use spherical harmonics and Gegenbauer polynomials to prove a new weighted inequality for the Schr\"odinger equation that is maximized by radial functions. We use Hermite and Laguerre polynomial expansions to produce sharp Strichartz estimates for even exponents. In particular, for radial initial data in dimension 2, we establish an interesting connection of the Strichartz norm with a combinatorial problem about words with four letters.
影响因子:
2.2
作者:
Bennett J
通讯作者:
Bennett J