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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…

偏微分方程分析 · 数学 2014-02-19 Francis J. Chung

On the basis of generalization of upper and lower solution method to the singular two point boundary value problems, the existence theorem of solutions for the system, which models a process of magnetic insulation in plasma is proved.

数学物理 · 物理学 2007-05-23 A. V. Sinitsyn

We study the stability issue in the inverse problem of determining the magnetic field and the time-dependent electric potential appearing in the Schr\"odinger equation, from boundary observations. We prove in dimension 3 or greater, that…

偏微分方程分析 · 数学 2017-09-13 Ibtissem Ben Aicha

We discuss an integral form of the Cauchy initial value problem for the nonlinear Schroedinger equation with variable coefficients. Some special and limiting cases are outlined.

数学物理 · 物理学 2008-05-19 Erwin Suazo , Sergei Suslov

In this paper, we study an inverse problem of identifying two spatial-temporal source terms in the Schr\"odinger equation with dynamic boundary conditions from the final time overdetermination. We adopt a weak solution approach to solve the…

偏微分方程分析 · 数学 2024-10-29 Salah-Eddine Chorfi , Alemdar Hasanov , Roberto Morales

In this note we devise and analyse well-posed variational formulations and operator theoretical methods for boundary value problems associated to the biharmonic operator. Of particular interest are Neumann type and over- and underdetermined…

偏微分方程分析 · 数学 2025-12-02 Dirk Pauly , Alberto Valli

We study the inverse problem of determining the vector and scalar potentials $\mathcal{A}(t,x)=\left(A_{0},A_{1},\cdots,A_{n}\right)$ and $q(t,x)$, respectively, in the relativistic Schr\"odinger equation \begin{equation*}…

偏微分方程分析 · 数学 2019-06-24 Venkateswaran P. Krishnan , Manmohan Vashisth

We consider the spectral structure of indefinite second order boundary-value problems on graphs. A variational formulation for such boundary-value problems on graphs is given and we obtain both full and half-range completeness results. This…

谱理论 · 数学 2017-07-05 Sonja Currie , Bruce Alastair Watson

Some reverses of the continuous triangle inequality for Bochner integral of vector-valued functions in complex Hilbert spaces are given. Applications for complex-valued functions are provided as well.

泛函分析 · 数学 2007-05-23 Sever Silvestru Dragomir

This paper is concerned with the initial-boundary value problem to 2D magnetohydrodynamics-Boussinesq system with the temperature-dependent viscosity, thermal diffusivity and electrical conductivity. First, we establish the global weak…

偏微分方程分析 · 数学 2017-02-28 Dongfen Bian , Jitao Liu

We study the inverse boundary value problem for the Helmholtz equation using the Dirichlet-to-Neumann map at selected frequencies as the data. A conditional Lipschitz stability estimate for the inverse problem holds in the case of…

偏微分方程分析 · 数学 2019-06-05 Elena Beretta , Maarten V. de Hoop , Florian Faucher , Otmar Scherzer

The discrete Schr\"odinger equation with the Dirichlet boundary condition is considered on a half-line lattice when the potential is real valued and compactly supported. The inverse problem of recovery of the potential from the so-called…

谱理论 · 数学 2018-05-22 Tuncay Aktosun , Vassilis G. Papanicolaou

In paraxial approximation, the electromagnetic eigenmodes inside an optical microresonator can be derived from a Schr\"odinger-type eigenvalue problem. In this framework, tilting the cavity mirrors effectively introduces a linear potential…

We consider the inverse problem of determining the time and space dependent electromagnetic potential of the Schr\"odinger equation in a bounded domain of $\mathbb R^n$, $n\geq 2$, by boundary observation of the solution over the entire…

偏微分方程分析 · 数学 2017-05-04 Yavar Kian , Eric Soccorsi

We establish a Schn$\ddot{\text{u}}$rer's convergence result and then apply it to obtain the existence of solutions on the second boundary value problem for a family of special Lagrangian equations

偏微分方程分析 · 数学 2021-01-27 R. L. Huang , Y. H. Ye

This work studies the initial-boundary value problem of the two-dimensional nonlinear Schr\"odinger equation on the half-plane with initial data in Sobolev spaces and Neumann or Robin boundary data in appropriate Bourgain spaces. It…

偏微分方程分析 · 数学 2022-04-28 A. Alexandrou Himonas , Dionyssios Mantzavinos

We study inverse boundary problems for magnetic Schr\"odinger operators on a compact Riemannian manifold with boundary of dimension $\ge 3$. In the first part of the paper we are concerned with the case of admissible geometries, i.e.…

偏微分方程分析 · 数学 2018-08-01 Katya Krupchyk , Gunther Uhlmann

In the current paper we consider an inverse boundary value problem of electromagnetism with nonlinear Second Harmonic Generation (SHG) process. We show the unique determination of the electromagnetic material parameters and the SHG…

偏微分方程分析 · 数学 2020-09-10 Yernat Assylbekov , Ting Zhou

We study the local and global well-posedness of the periodic boundary value problem for the nonlinear Schr\"odinger-Boussinesq system. The existence of periodic pulses as well as the stability of such solutions are also considered.

偏微分方程分析 · 数学 2010-09-30 Luiz Gustavo Farah , Ademir Pastor

We discuss the solution of boundary value problems that arise after the separation of variables in the Schr\"odinger equation in oblate spheroidal coordinates. The specificity of these boundary value problems is that the singular points of…

数学物理 · 物理学 2018-03-06 V. N. Kovalenko , A. M. Puchkov