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The paper concerns the magnetic Schr\"odinger operator on $R^n$. Under certain conditions, given in terms of the reverse H\"older inequality on the magnetic field and the electric potential, we prove some $L^p$ estimates on the Riesz…

Classical Analysis and ODEs · Mathematics 2009-05-05 Besma Ben Ali

We consider vector-valued magnetic Schr\"odinger operators $-\bm \Delta_{\bm a}+V$ with magnetic potential $\bm a \in L^2_{\mathrm{loc}}(\mathbb{R}^d;\mathbb{R}^d)$ and electric potential $V$ given by a matrix-valued function whose entries…

Analysis of PDEs · Mathematics 2026-05-25 Davide Addona , Vincenzo Leone , Luca Lorenzi , El Maati Ouhabaz , Abdelaziz Rhandi

We show various $L^p$ estimates for Schr\"odinger operators $-\Delta+V$ on $\RR^n$ and their square roots. We assume reverse H\"older estimates on the potential, and improve some results of Shen \cite{Sh1}. Our main tools are improved…

Analysis of PDEs · Mathematics 2007-05-23 Pascal Auscher , Besma Ben Ali

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

We prove $L^p$ and smoothing estimates for the resolvent of magnetic Schr\"odinger operators. We allow electromagnetic potentials that are small perturbations of a smooth, but possibly unbounded background potential. As an application, we…

Analysis of PDEs · Mathematics 2016-07-19 Jean-Claude Cuenin , Carlos Kenig

As it was shown by Shen, the Riesz transforms associated to the Schr\"odinger operator $L=-\Delta + V$ are not bounded on $L^p(\mathbb{R}^d)$-spaces for all $p, 1<p<\infty$, under the only assumption that the potential satisfies a reverse…

Analysis of PDEs · Mathematics 2020-08-27 Bruno Bongioanni , Eleonor Harboure , Pablo Quijano

We establish various $L^{p}$ estimates for the Schr\"odinger operator $-\Delta+V$ on Riemannian manifolds satisfying the doubling property and a Poincar\'e inequality, where $\Delta $ is the Laplace-Beltrami operator and $V$ belongs to a…

Differential Geometry · Mathematics 2008-12-09 Nadine Badr , Besma Ben Ali

For any fixed $p>2$, a necessary and sufficient condition is obtained for the boundedness of the Riesz transforms associated with second order elliptic operators with real, symmetric, bounded measurable coefficients.

Analysis of PDEs · Mathematics 2007-05-23 Zhongwei Shen

Let $L=-\Delta + V(x)$ be a Schr\"odinger operator on $\mathbb R^d$, where $V(x)\geq 0$, $V\in L^2_{\rm loc} (\mathbb R^d)$. We give a short proof of dimension free $L^p(\mathbb R^d)$ estimates, $1<p\leq 2$, for the vector of the Riesz…

Functional Analysis · Mathematics 2025-01-14 Jacek Dziubański

In this paper we prove Lieb--Thirring inequalities for magnetic Schr\"odinger operators on the torus, where the constants in the inequalities depend on the magnetic flux.

Spectral Theory · Mathematics 2023-06-01 Alexei Ilyin , Ari Laptev

We prove optimal Lieb-Thirring type inequalities for Schr\"odinger and Jacobi operators with complex potentials. Our results bound eigenvalue power sums (Riesz means) by the $L^p$ norm of the potential, where in contrast to the self-adjoint…

Spectral Theory · Mathematics 2025-10-03 Sabine Bögli , Sukrid Petpradittha

In this paper we establish the $L^p$-boundedness properties of the variation operators associated with the heat semigroup, Riesz transforms and commutator between Riesz transforms and multiplication by $BMO(R^n)$-functions in the…

Classical Analysis and ODEs · Mathematics 2010-10-18 J. J. Betancor , J. C. Fariña , E. Harboure , L. Rodríguez-Mesa

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

In the setting of Euclidean space with the Gaussian measure g, we consider all first-order Riesz transforms associated to the infinitesimal generator of the Ornstein-Uhlenbeck semigroup. These operators are known to be bounded on L^p(g),…

Functional Analysis · Mathematics 2010-02-08 G. Mauceri , S. Meda , P. Sjögren

We prove Lieb-Thirring inequalities for Schr\"odinger operators with a homogeneous magnetic field in two and three space dimensions. The inequalities bound sums of eigenvalues by a semi-classical approximation which depends on the strength…

Spectral Theory · Mathematics 2015-05-27 Rupert L. Frank , Rikard Olofsson

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…

Analysis of PDEs · Mathematics 2007-05-23 M. Burak Erdogan , Michael Goldberg , Wilhelm Schlag

The aim of the paper is to derive spectral estimates on the eigenvalue moments of the magnetic Schroedinger operators defined on the two-dimensional disk with a radially symmetric magnetic field and radially symmetric electric potential.

Mathematical Physics · Physics 2017-11-28 Diana Barseghyan , Francoise Truc

We prove that the number of negative eigenvalues of two-dimensional magnetic Schroedinger operators is bounded from above by the strength of the corresponding electric potential. Such estimates fail in the absence of a magnetic field. We…

Spectral Theory · Mathematics 2011-09-07 Hynek Kovarik

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…

Classical Analysis and ODEs · Mathematics 2014-02-26 Sanghyuk Lee , Keith M. Rogers , Andreas Seeger

In this paper, let $L=L_{0}+V$ be a Schr\"{o}dinger type operator where $L_{0}$ is higher order elliptic operator with complex coefficients in divergence form and $V$ is signed measurable function, under the strongly subcritical assumption…

Classical Analysis and ODEs · Mathematics 2016-03-29 Qingquan Deng , Yong Ding , Xiaohua Yao
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