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In this paper we show, in dimension n >=3, that knowledge of the Cauchy data for the Schroedinger equation in the presence of a magnetic potential, measured on possibly very small subsets of the boundary, determines uniquely the magnetic…

Analysis of PDEs · Mathematics 2007-05-23 David Dos Santos Ferreira , Carlos Kenig , Johannes Sjoestrand , Gunther Uhlmann

We show that an electric potential and magnetic field can be uniquely determined by partial boundary measurements of the Neumann-to-Dirichlet map of the associated magnetic Schr\"{o}dinger operator. This improves upon previous results of…

Analysis of PDEs · Mathematics 2014-02-19 Francis J. Chung

We prove Strichartz estimates for the absolutely continuous evolution of a Schr\"odinger operator $H = (i\nabla + A)^2 + V$ in $\R^n$, $n > 2$. Both the magnetic and electric potentials are time-independent and satisfy pointwise polynomial…

Analysis of PDEs · Mathematics 2008-04-02 Michael Goldberg

This paper concerns about the weak unique continuation property of solutions of a general system of differential equation/inequality with a second order strongly elliptic system as its leading part. We put not only some natural assumption…

Analysis of PDEs · Mathematics 2015-05-19 N. Honda , C. -L. Lin , G. Nakamura , S. Sasayama

In this paper, we investigate properties of unique continuation for hyperbolic Schr\"odinger equations with time-dependent complex-valued electric fields and time-independent real magnetic fields. We show that positive masses inside of a…

Analysis of PDEs · Mathematics 2023-06-09 Juan Antonio Barceló , Biagio Cassano , Luca Fanelli

We study a model Schr\"odinger operator with constant magnetic field on an infinite wedge with Neumann boundary condition. The magnetic field is assumed to be tangent to a face. We compare the bottom of the spectrum to the model spectral…

Analysis of PDEs · Mathematics 2014-02-20 Nicolas Popoff

We give a sharp upper bound on the vanishing order of solutions to Schr\"odinger equation, in the case that the potential is of class $\mathcal{C}^1$ on a smooth compact manifold.

Analysis of PDEs · Mathematics 2011-12-06 Laurent Bakri

We consider the Gel'fand-Calder\'on problem for a Schr\"odinger operator of the form $-(\nabla + iA)^2 + q$, defined on a ball $B$ in $\mathbb R^3$. We assume that the magnetic potential $A$ is small in $W^{s,3}$ for some $s>0$, and that…

Analysis of PDEs · Mathematics 2017-03-01 Boaz Haberman

We prove a weighted Carleman estimate for a class of one-dimensional, self-adjoint Schr\"odinger operators $P(h)$ with low regularity electric and magnetic potentials, where $h > 0$ is a semiclassical parameter. The long range part of…

Analysis of PDEs · Mathematics 2025-06-10 Andrés Larraín-Hubach , Jacob Shapiro

We present a simple and self-contained approach to establish the unique continuation property for some classical evolution equations of second order in a cylindrical domain. We namely discuss this property for wave, parabolic and…

Analysis of PDEs · Mathematics 2024-03-15 Mourad Choulli

For the magnetic Hamiltonian with singular vector potentials, we analytically continue the resolvent to a logarithmic neighborhood of the positive real axis and prove resolvent estimates there. As applications, we obtain asymptotic…

Analysis of PDEs · Mathematics 2022-07-27 Mengxuan Yang

We prove sharpness of quantitative unique continuation results for solutions of $-\Delta u + W\cdot \nabla u + V u = \la u$, where $\la \in \C$ and $V$ and $W$ are complex-valued decaying potentials that satisfy $|V(x)| \lesssim <x>^{-N}$…

Analysis of PDEs · Mathematics 2014-04-11 Blair Davey

We show that formal Schr\"odinger operators with singular potentials from the space W^{-1}_{2,unif}(R) can be naturally defined to give selfadjoint and bounded below operators, which depend continuously in the uniform resolvent sense on the…

Spectral Theory · Mathematics 2007-05-23 Rostyslav O. Hryniv , Yaroslav V. Mykytyuk

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

In this paper, we establish the Carleman estimates for forward and backward stochastic fourth order Schr\"{o}dinger equations, on basis of which, we can obtain the observability, unique continuation property and the exact controllability…

Optimization and Control · Mathematics 2017-03-13 Peng Gao

In this paper we consider the space-fractional Schr\"odinger equation with a singular potential for a wide class of fractional hypoelliptic operators. Such analysis can be conveniently realised in the setting of graded Lie groups. The paper…

Analysis of PDEs · Mathematics 2022-03-14 M. Chatzakou , M. Ruzhansky , N. Tokmagambetov

We consider Schr\"odinger operators with potentials satisfying a generalized bounded variation condition at infinity and an $L^p$ decay condition. This class of potentials includes slowly decaying Wigner--von Neumann type potentials…

Spectral Theory · Mathematics 2012-07-25 Milivoje Lukic

This paper is inspired by Wang, Wang and Zhang's work [ Observability and unique continuation inequalities for the Schr\"odinger equation. J. Eur. Math. Soc. 21, 3513--3572 (2019)], where they present several observability and unique…

Analysis of PDEs · Mathematics 2023-11-01 Hui Xu , Longben Wei , Zhiwen Duan

We consider magnetic Schr\"odinger operators with periodic magnetic and electric potentials on periodic discrete graphs. The spectrum of the operators consists of an absolutely continuous part (a union of a finite number of non-degenerate…

Spectral Theory · Mathematics 2016-11-29 Evgeny Korotyaev , Natalia Saburova

We consider d-dimensional time dependent Schr\"odinger equations on the Hilbert space of square integrable functions. We assume magnetic and scalar potentials are almost critically singular with respect to spatial variables both locally and…

Mathematical Physics · Physics 2013-02-25 Daisuke Aiba , Kenji Yajima