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In this paper, Morgan type uncertainty principle and unique continuation properties of abstract Schr\"odinger equations with time dependent potentials in vector-valued classes are obtained. The equation involves a possible linear operators…

Analysis of PDEs · Mathematics 2017-06-06 Veli Shakhmurov

We prove a scale-free quantitative unique continuation estimate for the gradient of eigenfunctions of divergence-type operators, i.e. operators of the form $-\mathrm{div}A\nabla$, where the matrix function $A$ is uniformly elliptic. The…

Functional Analysis · Mathematics 2023-11-08 Alexander Dicke , Ivan Veselic

A Carleman estimate and the unique continuation property of solutions for a multi-terms time fractional diffusion equation up to order $\alpha\,\,(0<\alpha<2)$ and general time dependent second order strongly elliptic time elliptic operator…

Analysis of PDEs · Mathematics 2017-10-09 Ching-Lung Lin , Gen Nakamura

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…

Spectral Theory · Mathematics 2020-08-18 Ivica Nakić , Matthias Täufer , Martin Tautenhahn , Ivan Veselic , Albrecht Seelmann

In this paper, we obtain new Carleman estimates for a class of variable coefficient degenerate elliptic operators whose constant coefficient model at one point is the so called Baouendi-Grushin operator. This generalizes the results…

Analysis of PDEs · Mathematics 2020-11-26 Agnid Banerjee , Ramesh Manna

In this article we study the strong unique continuation property for solutions of higher order (variable coefficient) fractional Schr\"odinger operators. We deduce the strong unique continuation property in the presence of subcritical and…

Analysis of PDEs · Mathematics 2019-02-27 María-Ángeles García-Ferrero , Angkana Rüland

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

In this paper we study quantitative uniqueness estimates of solutions to general second order elliptic equations with magnetic and electric potentials. We derive lower bounds of decay rate at infinity for any nontrivial solution under some…

Analysis of PDEs · Mathematics 2013-03-12 Ching-Lung Lin , Jenn-Nan Wang

We establish a strong unique continuation property for stochastic parabolic equations. Our method is based on a suitable stochastic version of Carleman estimate. As far as we know, this is the first result for strong unique continuation…

Analysis of PDEs · Mathematics 2022-10-25 Zhonghua Liao , Qi Lü

We consider elliptic second order partial differential operators with Lipschitz continuous leading order coefficients on finite cubes and the whole Euclidean space. We prove quantitative sampling and equidistribution theorems for…

Analysis of PDEs · Mathematics 2025-05-23 Martin Tautenhahn , Ivan Veselic

We demonstrate a quantitative version of the usual properties related to unique continuation from an interior datum for the Schr\"odinger equation with bounded or unbounded potential. The inequalities we establish have constants that…

Analysis of PDEs · Mathematics 2025-04-11 Mourad Choulli , Hiroshi Takase

In this paper, Hardy's uncertainty principle and unique continuation properties of Schrodinger equations with operator potentials in Hilbert space-valued classes are obtained. Since the Hilbert space H and linear operators are arbitrary, by…

Analysis of PDEs · Mathematics 2019-06-04 Veli Shakhmurov

In this paper we prove unique continuation principles for some systems of elliptic partial differential equations satisfying a suitable superlinearity condition. As an application, we obtain nonexistence of nontrivial (not necessarily…

Analysis of PDEs · Mathematics 2021-01-06 Ederson Moreira dos Santos , Gabrielle Nornberg , Nicola Soave

We establish the strong unique continuation property of fractional orders of linear elliptic equations with Lipschitz coefficients by establishing monotonicity of some Almgren-type frequency functional via an extension procedure.

Analysis of PDEs · Mathematics 2017-08-30 Hui Yu

This paper mainly addresses the strong unique continuation property for the electromagnetic Schr\"{o}dinger operator with complex-valued coefficients. Appropriate multipliers with physical backgrounds have been introduced to prove a priori…

Mathematical Physics · Physics 2016-07-29 Xiaojun Lu , Xiaofen Lv

We revisit \cite[Theorem 6.3]{JK}. Following the main ideas used to prove this theorem, we establish a quantitative version of the strong unique continuation property for the Sch\"odinger operator with unbounded potential. We also show that…

Analysis of PDEs · Mathematics 2023-09-19 Mourad Choulli

Based on a variant of frequency function, we improve the vanishing order of solutions for Schr\"{o}dinger equations which describes quantitative behavior of strong uniqueness continuation property. For the first time, we investigate the…

Analysis of PDEs · Mathematics 2014-12-23 Jiuyi Zhu

We obtain a unique continuation result for fractional Schr\"odinger operators with potential in Morrey spaces. This is based on Carleman inequalities for fractional Laplacians.

Analysis of PDEs · Mathematics 2015-03-19 Ihyeok Seo

We prove the strong unique continuation property for many-body Pauli operators with external potentials, interaction potentials and magnetic fields in $L^p\loc(\R^d)$, and with magnetic potentials in ${L^{q}\loc(\R^d)}$, where ${p >…

Mathematical Physics · Physics 2024-07-08 Louis Garrigue

In this article, we study the quantitative uniqueness of solutions to second order elliptic equations with singular lower order terms. We quantify the strong unique continuation property by estimating the maximal vanishing order of…

Analysis of PDEs · Mathematics 2017-05-24 Blair Davey , Jiuyi Zhu