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We present an elementary approach to prove restriction theorems for particular surfaces for which the Tomas-Stein theorem does not apply, which in turn provide short proofs for well-known Strichartz estimates for associated PDEs. The method…

偏微分方程分析 · 数学 2021-11-30 Corentin Gentil , Côme Tabary

We consider the uniform resolvent and orthonormal Strichartz estimates for the Schr\"odinger operator. First we prove the Keel-Tao type theorem for the orthonormal Strichartz estimates, which means that the dispersive estimates yield the…

偏微分方程分析 · 数学 2024-07-09 Akitoshi Hoshiya

In this paper we consider magnetic Schr\"odinger operators in R^n, n \ge 3. Under almost optimal conditions on the potentials in terms of decay and regularity we prove smoothing and Strichartz estimates, as well as a limiting absorption…

偏微分方程分析 · 数学 2007-05-23 M. Burak Erdogan , Michael Goldberg , Wilhelm Schlag

We derive bilateral estimates for the constants appearing in the Fourier transform restricted theorems on the Euclidean sphere for the ordinary and especially radial functions belonging to the Lebesgue-Riesz spaces as well as belonging to…

经典分析与常微分方程 · 数学 2021-10-07 M. R. Formica , E. Ostrovsky , L. Sirota

In this paper we prove the orthonormal Strichartz estimates for the higher order and fractional Schr\"odinger, wave, Klein-Gordon and Dirac equations with potentials. As in the case of the Schr\"odinger operator, the proofs are based on the…

偏微分方程分析 · 数学 2024-01-18 Akitoshi Hoshiya

We establish new Strichartz estimates for orthonormal systems on compact Riemannian manifolds in the non-sharp admissible region of exponents, covering wave, Klein-Gordon, and fractional Schr\"odinger equations. Our approach combines the…

经典分析与常微分方程 · 数学 2026-05-12 Hongzhou Ji , Liping Xu , An Zhang

A comprehensive analysis of Sobolev-type inequalities for the Ornstein-Uhlenbeck operator in the Gauss space is offered. A unified approach is proposed, providing one with criteria for their validity in the class of rearrangement-invariant…

泛函分析 · 数学 2023-03-20 Andrea Cianchi , Vít Musil , Luboš Pick

Let $\Delta_{k,a}$ and $\Delta_k $ be the $(k,a)$-generalized Laguerre operator and the Dunkl Laplacian operator on $\mathbb{R}^n$, respectively. The aim of this article is twofold. First, we prove a restriction theorem for the…

泛函分析 · 数学 2022-08-26 Shyam Swarup Mondal , Manli Song

We prove uniform Sobolev estimates for the resolvent of Schr\"odinger operators with large scaling-critical potentials without any repulsive condition. As applications, global-in-time Strichartz estimates including some non-admissible…

偏微分方程分析 · 数学 2020-07-29 Haruya Mizutani

In this paper, we establish some Strichartz estimates for orthonormal functions and probabilistic convergence of density functions related to compact operators on manifolds. Firstly, we present the suitable bound of $\int_{a\leq|s|\leq…

概率论 · 数学 2024-11-12 Wei Yan , Jinqiao Duan , Jianhua Huang , Haoyuan Xu , Meihua Yang

We show convergence of the gradients of the Schr\"odinger potentials to the Brenier map in the small-time limit under general assumptions on the marginals, which allow for unbounded densities and supports. Furthermore, we provide novel…

概率论 · 数学 2023-04-18 Alberto Chiarini , Giovanni Conforti , Giacomo Greco , Luca Tamanini

We develop a theory of regularity for continuum Schr\"odinger operators based on the Martin compactification of the complement of the essential spectrum. This theory is inspired by Stahl--Totik regularity for orthogonal polynomials, but…

谱理论 · 数学 2025-03-05 Benjamin Eichinger , Milivoje Lukić

In this paper, motivated by recent important works due to Frank-Lewin-Lieb-Seiringer \cite{FLLS} and Frank-Sabin \cite{frank-sabin-1}, we study the Strichartz inequality on torus with the orthonormal system input and obtain sharp estimates…

泛函分析 · 数学 2018-01-26 Shohei Nakamura

We prove Strichartz estimates for the semigroups associated to stratified and/or rotating inviscid geophysical fluids using Fourier restriction theory. We prove new results for rotating stratified fluids, and recover results from [16] for…

偏微分方程分析 · 数学 2024-01-18 Corentin Gentil , Côme Tabary

The primary objective of this paper is to investigate the orthonormal Strichartz estimates at the critical summability exponent for the Schr\"odinger operator $e^{it\Delta}$ with initial data from the homogeneous Sobolev space $\dot{H}^s…

偏微分方程分析 · 数学 2025-07-22 Guoxia Feng , Manli Song , Huoxiong Wu

We prove a Fourier restriction result, uniform over a certain collection of reference measures, for some indices in the Stein-Tomas range.

经典分析与常微分方程 · 数学 2010-10-05 Daniel M. Oberlin

We establish new Strichartz estimates for orthonormal families of initial data in the case of the wave, Klein-Gordon and fractional Schr\"odinger equations. Our estimates extend those of Frank-Sabin in the case of the wave and Klein-Gordon…

偏微分方程分析 · 数学 2020-04-28 Neal Bez , Sanghyuk Lee , Shohei Nakamura

Self-adjoint Schr\"odinger operators with $\delta$ and $\delta'$-potentials supported on a smooth compact hypersurface are defined explicitly via boundary conditions. The spectral properties of these operators are investigated, regularity…

谱理论 · 数学 2013-02-18 Jussi Behrndt , Matthias Langer , Vladimir Lotoreichik

We establish uncertainty principles on compact Riemannian manifolds without boundary by combining restriction estimates for orthonormal systems with spectral projection bounds for Laplace-Beltrami and Schr\"odinger operators. Our results…

偏微分方程分析 · 数学 2026-05-27 Alex Iosevich , Chamsol Park

For the one-dimensional Schr\"odinger equation, we obtain sharp maximal-in-time and maximal-in-space estimates for systems of orthonormal initial data. The maximal-in-time estimates generalize a classical result of Kenig--Ponce--Vega and…

偏微分方程分析 · 数学 2019-09-16 Neal Bez , Sanghyuk Lee , Shohei Nakamura