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Multiparameter maximal estimates are considered for operators of Schr\"odinger type. Sharp and almost sharp results, that extend work by Rogers and Villarroya, are obtained. We provide new estimates via the integrability of the kernel which…

Analysis of PDEs · Mathematics 2013-05-15 Per Sjölin , Fernando Soria

We obtain asymptotic resolvent expansions at the threshold of the essential spectrum for magnetic Schr\"odinger and Pauli operators in dimension three. These operators are treated as perturbations of the Laplace operator in…

Spectral Theory · Mathematics 2024-01-26 Arne Jensen , Hynek Kovarik

In this paper we prove identifiability and stability estimates for a local-data inverse boundary value problem for a magnetic Schr\"odinger operator in dimension $n\geq 3$. We assume that the inaccessible part of the boundary is part of a…

Analysis of PDEs · Mathematics 2016-10-17 Leyter Potenciano-Machado

Dispersive estimate for the fourth order Schr\"odinger operator with a class of scaling-critical magnetic potentials in dimension two was obtained by the construction of the corresponding resolvent kernel and the stationary phase method.

Analysis of PDEs · Mathematics 2024-08-30 Haoran Wang

We first prove semiclassical resolvent estimates for the Schr{\"o}dinger operator in R d , d $\ge$ 3, with real-valued potentials which are H{\"o}lder with respect to the radial variable. Then we extend these resolvent estimates to exterior…

Analysis of PDEs · Mathematics 2020-08-10 Georgi Vodev

In this paper, we combine the argument of [12] and [27] to prove the maximal estimates for fractional Schr\"odinger equations $(i\partial_t+\mathcal{L}_{\mathbf{A}}^{\frac\alpha 2})u=0$ in the purely magnetic fields which includes the…

Analysis of PDEs · Mathematics 2022-01-06 Haoran Wang , Jiye Yuan

We prove Strichartz estimates for the Schroedinger equation with an electromagnetic potential, in dimension $n\geq3$. The decay and regularity assumptions on the potentials are almost critical, i.e., close to the Coulomb case. In addition,…

Analysis of PDEs · Mathematics 2009-01-27 Piero D'Ancona , Luca Fanelli , Luis Vega , Nicola Visciglia

In this article, we study stability estimates when recovering magnetic fields and electric potentials in a simply connected open subset in $R^n$ with $n \geq 3$, from measurements on open subsets of its boundary. This inverse problem is…

Analysis of PDEs · Mathematics 2020-09-29 L. Potenciano-Machado , A. Ruiz , L. Tzou

We study the cut-off resolvent of semiclassical Schr{\"o}dinger operators on $\mathbb{R}^d$ with bounded compactly supported potentials $V$. We prove that for real energies $\lambda^2$ in a compact interval in $\mathbb{R}_+$ and for any…

Analysis of PDEs · Mathematics 2018-11-28 Frédéric Klopp , Martin Vogel

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…

Algebraic Topology · Mathematics 2010-08-25 Vladimir Georgiev , Atanas Stefanov , Mirko Tarulli

In the present paper we establish sharp exponential decay estimates for operator and integral kernels of the (not necessarily self-adjoint) operators $L=-(\nabla-i\mathbf{a})^TA(\nabla-i\mathbf{a})+V$. The latter class includes, in…

Analysis of PDEs · Mathematics 2019-03-11 Svitlana Mayboroda , Bruno Poggi

We obtain $L^p$ estimates of the maximal Schr\"odinger operator in $\mathbb R^n$ using polynomial partitioning, bilinear refined Strichartz estimates, and weighted restriction estimates.

Classical Analysis and ODEs · Mathematics 2024-11-08 Xiumin Du , Jianhui Li

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…

Classical Analysis and ODEs · Mathematics 2017-08-28 Felipe Gonçalves

In this paper we study the resolvent of wave operators on open and bounded Lipschitz domains of $\mathbb{R}^N$ with Dirichlet or Neumann boundary conditions. We give results on existence and estimates of the resolvent for the real and…

Analysis of PDEs · Mathematics 2021-07-13 Kaïs Ammari , Chérif Amrouche

Strichartz estimates for a time-decaying harmonic oscillator were proven with some assumptions of coefficients for the time-decaying harmonic potentials. The main results of this paper are to remove these assumptions and to enable us to…

Analysis of PDEs · Mathematics 2020-07-15 Masaki Kawamoto

One-dimensional Schr\"odinger operators with singular perturbed magnetic and electric potentials are considered. We study the strong resolvent convergence of two families of the operators with potentials shrinking to a point. Localized…

Spectral Theory · Mathematics 2019-05-14 Yuriy Golovaty

We present some old and new results on dispersive estimates for Schroedinger equations.

Analysis of PDEs · Mathematics 2007-05-23 Wilhelm Schlag

We prove magnetic interpolation inequalities and Keller-Lieb-Thir-ring estimates for the principal eigenvalue of magnetic Schr{\"o}dinger operators. We establish explicit upper and lower bounds for the best constants and show by numerical…

Analysis of PDEs · Mathematics 2018-05-09 Jean Dolbeault , Maria J. Esteban , Ari Laptev , Michael Loss

We prove dispersive estimates for linear Schroedinger equations in two space dimensions. The potential is assumed to be real-valued with some polynomial decay (faster than a negative third power), and zero energy is assumed to be a regular…

Analysis of PDEs · Mathematics 2009-11-10 Wilhelm Schlag

In this paper, we prove that Kato smoothing effects for magnetic Schr\"odinger operators can yield the endpoint Strichartz estimates for linear wave equation with magnetic potential on two dimensional hyperbolic spaces. This result serves…

Analysis of PDEs · Mathematics 2018-03-16 Ze Li