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This paper is concerned with derivation of the global or local in time Strichartz estimates for radially symmetric solutions of the free wave equation from some Morawetz-type estimates via weighted Hardy-Littlewood-Sobolev (HLS)…

偏微分方程分析 · 数学 2007-11-14 Kunio Hidano , Yuki Kurokawa

We prove resolvent estimates for a Schr\"odinger operator with a short-range potential outside an obstacle with Dirichlet boundary conditions. As a consequence, we deduce integrability of the local energy for the wave equation, and…

偏微分方程分析 · 数学 2024-11-25 Thomas Duyckaerts , Jianwei Urban Yang

In this note we consider the adjoint restriction estimate for hypersurface under additional regularity assumption. We obtain the optimal $H^s$-$L^q$ estimate and its mixed norm generalization. As applications we prove some weighted…

经典分析与常微分方程 · 数学 2014-09-30 Yonggeun Cho , Zihua Guo , Sanghyuk Lee

We prove and apply two theorems: First, a quantitative, scale-free unique continuation estimate for functions in a spectral subspace of a Schr\"odinger operator on a bounded or unbounded domain, second, a perturbation and lifting estimate…

We develop refined Strichartz estimates at $L^2$ regularity for a class of time-dependent Schr\"{o}dinger operators. Such refinements begin to characterize the near-optimizers of the Strichartz estimate, and play a pivotal part in the…

偏微分方程分析 · 数学 2020-11-18 Casey Jao

We consider the Schr\"odinger equation on a half space in any dimension with a class of nonhomogeneous boundary conditions including Dirichlet, Neuman and the so-called transparent boundary conditions. Building upon recent local in time…

偏微分方程分析 · 数学 2017-02-23 Corentin Audiard

We review some results on the spectral theory of Schr{\"o}dinger and Dirac operators. We focus on two aspects: the existence of embbedded eigen-values in the essential spectrum and the limiting absorption principle. They both are important…

数学物理 · 物理学 2019-05-20 Thierry Jecko

In this paper we prove some new Strichartz estimates related to the Cauchy problem for the Bessel operator on the half-line and we establish a fractal version of the Tomas-Stein restriction theorem for the Hankel transform. Then we use the…

偏微分方程分析 · 数学 2025-07-29 Nicola Garofalo , Gigliola Staffilani

We establish uniform bounds for the solutions $e^{it\Delta}u$ of the Schr\"{o}dinger equation on arithmetic flat tori, generalising earlier results by J. Bourgain. We also study the regularity properties of weak-* limits of sequences of…

偏微分方程分析 · 数学 2012-03-14 Tayeb Aïssiou , Dmitry Jakobson , Fabricio Macià

We consider the scattering transform for the Schr\"odinger equation with a singular potential and no bound states. Using the Riccati representation for real-valued potentials on the line, we obtain invertibility and Lipschitz continuity of…

数学物理 · 物理学 2010-02-03 Rostyslav O. Hryniv , Yaroslav V. Mykytyuk , Peter A. Perry

Using recent work of Bourgain-Dyatlov we show that for any convex co-compact hyperbolic surface Strichartz estimates for the Schr\"odinger equation hold with an arbitrarily small loss of regularity.

偏微分方程分析 · 数学 2017-07-21 Jian Wang

We review some results and proofs on eigenvalue bounds for random Schr\"odinger operators with complex-valued potentials. We also include new Schatten norm estimates for the resolvent and use them to obtain bounds for sums of eigenvalues.

谱理论 · 数学 2023-08-29 Jean-Claude Cuenin , Konstantin Merz

This paper deals with global dispersive properties of Schr\"odinger equations with real-valued potentials exhibiting critical singularities, where our class of potentials is more general than inverse-square type potentials and includes…

偏微分方程分析 · 数学 2016-07-13 Jean-Marc Bouclet , Haruya Mizutani

The objective of this paper is to report on recent progress on Strichartz estimates for the Schr\"odinger equation and to present the state-of-the-art. These estimates have been obtained in Lebesgue spaces, Sobolev spaces and, recently, in…

偏微分方程分析 · 数学 2018-07-23 Elena Cordero , Davide Zucco

The work treats smoothing and dispersive properties of solutions to the Schrodinger equation with magnetic potential. Under suitable smallness assumption on the potential involving scale invariant norms we prove smoothing - Strichartz…

代数拓扑 · 数学 2010-08-25 Vladimir Georgiev , Atanas Stefanov , Mirko Tarulli

In this paper a lower bound for solutions to the secular equation of the Schr\"odinger equation with basis functions discontinuous on boundaries of divided regions is given. If the functions do not have the discontinuity, the bound reduces…

偏微分方程分析 · 数学 2023-12-08 Sohei Ashida

We prove a weighted norm inequality for the maximal Bochner--Riesz operator and the associated square-function. This yields new $L^p(R^d)$ bounds on classes of radial Fourier multipliers for $p\ge 2+4/d$ with $d\ge 2$, as well as space-time…

经典分析与常微分方程 · 数学 2014-02-26 Sanghyuk Lee , Keith M. Rogers , Andreas Seeger

We consider eigenvalue sums of Schr\"odinger operators $-\Delta+V$ on $L^2(\R^d)$ with complex radial potentials $V\in L^q(\R^d)$, $q<d$. We prove quantitative bounds on the distribution of the eigenvlaues in terms of the $L^q$ norm of $V$.…

谱理论 · 数学 2024-09-06 Jean-Claude Cuenin , Solomon Keedle-Isack

In this paper we prove an approximate continuity result for stochastic differential equations with normal reflections in domains satisfying Saisho's conditions, which together with the Wong-Zakai approximation result completes the support…

概率论 · 数学 2016-06-07 Jiagang Ren , Jing Wu

We consider the Schr\"odinger map initial value problem into the sphere in 2+1 dimensions with smooth, decaying, subthreshold initial data. Assuming an a priori $L^4$ boundedness condition on the solution, we prove that the Schr\"odinger…

偏微分方程分析 · 数学 2013-01-30 Paul Smith