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We propose a discrete approach for solving an inverse problem for Schr\"odinger's equation in two dimensions, where the unknown potential is to be determined from boundary measurements of the Dirichlet to Neumann map. For absorptive…

数值分析 · 数学 2018-06-18 Liliana Borcea , Fernando Guevara Vasquez , Alexander V. Mamonov

In this paper we consider the inverse problem of determining on a compact Riemannian manifold the electric potential and the absorption coefficient in the wave equation with Dirichlet data from measured Neumann boundary observations. This…

偏微分方程分析 · 数学 2018-05-02 Mourad Bellassoued , Zouhour Rezig

We consider Sturm-Liouville operators on geometrical graphs without cycles (trees) with singular potentials from the class $W_2^{-1}$. We suppose that the potentials are known on a part of the graph, and study the so-called partial inverse…

谱理论 · 数学 2017-11-16 Natalia P. Bondarenko

We consider the Calder\'on problem in the case of partial Dirichlet-to-Neumann map for the system of elliptic equations in a bounded two dimensional domain. The main result of the manuscript is as follows: If two systems of elliptic…

数学物理 · 物理学 2015-03-29 Oleg Imanuvilov , M. Yamamoto

We show that a partial Dirichlet-to-Neumann map, where the measurement set is arbitrarily small, uniquely determines the time-dependent nonlinearity of order three or higher in a semi-linear wave equation up to natural obstructions on a…

偏微分方程分析 · 数学 2025-11-13 Boya Liu , Weinan Wang

We study equations driven by Schr\"odinger operators consisting of a self-adjoint Dirichlet operator and a singular potential, which belongs to a class of positive Borel measures absolutely continuous with respect to a capacity generated by…

偏微分方程分析 · 数学 2023-08-22 Tomasz Klimsiak

We study the inverse scattering for Schr{\"o}dinger operators on locally perturbed periodic lattices. We show that the associated scattering matrix is equivalent to the Dirichlet-to-Neumann map for a boundary value problem on a finite part…

谱理论 · 数学 2018-11-14 Kazunori Ando , Hiroshi Isozaki , Hisashi Morioka

We prove that a compactly supported perturbation of a rational or simply periodic algebro-geometric potential of the one-dimensional Schr\"odinger equation on the half line is uniquely determined by the location of its Dirichlet eigenvalues…

数学物理 · 物理学 2011-11-09 B. M. Brown , R. Weikard

This work studies the direct and inverse fixed energy scattering problem for two-dimensional Schroedinger equation with rather general nonlinear index of refraction. In particular, using the Born approximation we prove that all…

数学物理 · 物理学 2014-12-02 Georgios Fotopoulos , Valery Serov

Let $A\in\mathrm{Sym}(n\times n)$ be an elliptic 2-tensor. Consider the anisotropic fractional Schr\"odinger operator $\mathscr{L}_A^s+q$, where $\mathscr{L}_A^s:=(-\nabla\cdot(A(x)\nabla))^s$, $s\in (0, 1)$ and $q\in L^\infty$. We are…

偏微分方程分析 · 数学 2017-12-11 Xinlin Cao , Yi-Hsuan Lin , Hongyu Liu

In this article, we study the boundary inverse problem of determining the aligned magnetic fiaeld appearing in the magnetic Schr\"odinger equation in a periodic quantum cylindrical waveguide. Provided that the Dirichlet-to-Neumann map of…

偏微分方程分析 · 数学 2016-06-29 Youssef Mejri

We consider Schr\"{o}dinger equations with linearly energy-depending potentials which are compactly supported on the half-line. We first provide estimates of the number of eigenvalues and resonances for such complex-valued potentials under…

数学物理 · 物理学 2023-07-28 Evgeny Korotyaev , Andrea Mantile , Dmitrii Mokeev

On a fixed smooth compact Riemann surface with boundary $(M_0,g)$, we show that the Cauchy data space (or Dirichlet-to-Neumann map $\mc{N}$) of the Schr\"odinger operator $\Delta +V$ with $V\in C^2(M_0)$ determines uniquely the potential…

微分几何 · 数学 2009-04-27 Colin Guillarmou , Leo Tzou

We study an inverse boundary value problem associated with $p$-Laplacian which is further perturbed by a linear second order term, defined on a bounded set $\Omega$ in $\R^n, n\geq 2$. We recover the coefficients at the boundary from the…

偏微分方程分析 · 数学 2024-01-12 Nitesh Kumar , Tanmay Sarkar , Manmohan Vashisth

We study an inverse problem for nonlinear elliptic equations modelled after the p-Laplacian. It is proved that the boundary values of a conductivity coefficient are uniquely determined from boundary measurements given by a nonlinear…

偏微分方程分析 · 数学 2011-06-22 Mikko Salo , Xiao Zhong

\We consider an inverse scattering problem for Schr\"odinger operators with energy dependent potentials. The inverse problem is formulated as a Riemann-Hilbert problem on a Riemann surface. A vanishing lemma is proved for two distinct…

solv-int · 物理学 2009-10-30 David H. Sattinger , Jacek Szmigielski

We consider an inverse problem of recovering all spatial dependent coefficients in the time dependent Schr\"odinger equation defined on an open bounded domain in $\mathbb{R}^n$, $n\geq 2$, with smooth enough boundary. We show that by…

偏微分方程分析 · 数学 2025-03-19 Shitao Liu , Antonio Pierrottet

We consider the inverse problem of the determining the potential in the dynamical Schr\"odinger equation on the interval by the measurement on the whole boundary. Provided that source is \emph{generic} using the Boundary Control method we…

数学物理 · 物理学 2011-11-11 S. A. Avdonin , V. S. Mikhaylov , K. Ramdani

In this article, we investigate an inverse problem for a semi-linear wave equation posed on bounded domain in $\mathbb{R}^{n+1}$, with $n \geq 2$. Our primary objective is to reconstruct the damping coefficient, the linear and nonlinear…

偏微分方程分析 · 数学 2026-04-07 Rahul Bhardwaj , Mandeep Kumar , Manmohan Vashisth

We consider the Klein-Gordon equation on asymptotically anti-de Sitter spacetimes, and show that the forward Dirichlet-to-Neumann map (or scattering matrix) is a fractional power of the boundary wave operator modulo lower order terms in the…

偏微分方程分析 · 数学 2026-03-17 Alberto Enciso , Gunther Uhlmann , Michał Wrochna