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We present a method to solve numerically the Cauchy problem for the defocusing nonlinear Schr\"{o}dinger (NLS) equation with a box-type initial condition (IC) having a nontrivial background of amplitude $q_o>0$ as $x\to \pm \infty$ by…

可精确求解与可积系统 · 物理学 2025-09-11 Aikaterini Gkogkou , Barbara Prinari , Thomas Trogdon

A review of some of the author's results in the area of inverse scattering is given. The following topics are discussed: 1) Property $C$ and applications, 2) Stable inversion of fixed-energy 3D scattering data and its error estimate, 3)…

数学物理 · 物理学 2009-11-13 A. G. Ramm

In this paper we consider the inverse electromagnetic scattering for a cavity surrounded by an inhomogeneous medium in three dimensions. The measurements are scattered wave fields measured on some surface inside the cavity, where such…

偏微分方程分析 · 数学 2020-12-10 Fang Zeng , Shixu Meng

We give a solution of the Inverse Scattering Problem for integrable systems with a finite number degrees of freedom, admitting a Lax representation with spectral parameter on a Riemann surface. While conventional approaches deal with the…

数学物理 · 物理学 2020-07-07 O. K. Sheinman

We study an inverse scattering problem for Maxwell's equations in terminating waveguides, where localized reflectors are to be imaged using a remote array of sensors. The array probes the waveguide with waves and measures the scattered…

数值分析 · 数学 2015-10-27 Liliana Borcea , Dinh-Liem Nguyen

Exact solutions of Einstein's vacuum equations are considered which describe gravitational waves with distinct wavefronts. A family of such solutions presented recently in which the wavefronts have various geometries and which propagate…

广义相对论与量子宇宙学 · 物理学 2008-11-26 G A Alekseev , J B Griffiths

We present a method to compute dispersive shock wave solutions of the Korteweg-de Vries equation that emerge from initial data with step-like boundary conditions at infinity. We derive two different Riemann-Hilbert problems associated with…

偏微分方程分析 · 数学 2018-10-02 Deniz Bilman , Thomas Trogdon

This paper addresses the inverse scattering problem of a random potential associated with the polyharmonic wave equation in two and three dimensions. The random potential is represented as a centered complex-valued generalized microlocally…

偏微分方程分析 · 数学 2025-07-02 Jianliang Li , Peijun Li , Xu Wang , Guanlin Yang

The theory of inverse scattering is developed to study the initial-value problem for the modified matrix Korteweg-de Vries (mmKdV) equation with the $2m\times2m$ $(m\geq 1)$ Lax pairs under the nonzero boundary conditions at infinity. In…

可精确求解与可积系统 · 物理学 2020-05-04 Jin-Jie Yang , Shou-Fu Tian , Zhi-Qiang Li

A review of the author's results is given. Inversion formulas and stability estimates for the solutions to 3D inverse scattering problems with fixed-energy data are obtained. Inversions of exact and noisy data are stidied. The inverse…

数学物理 · 物理学 2007-05-23 Alexander G. Ramm

Fully non-linear, plane-symmetric exact solutions of the Einstein equations describing the scattering of gravitational and electromagnetic waves have existed for many years. For these closed-form solutions to be found, idealized wave…

广义相对论与量子宇宙学 · 物理学 2024-08-13 Breanna Camden , Chris Stevens , John Forbes

Some effective field theories exhibit dynamical resonances that, when properly included, mitigate their bad behaviour at high energies. Unitarization of the partial wave amplitudes is the preferred method to unveil such resonances.…

高能物理 - 理论 · 物理学 2023-03-15 Rafael L. Delgado , Antonio Dobado , Domènec Espriu

The aim of this paper is to introduce the Inverse Scattering Method for later studies of some problems in nonlinear dynamics, and describe the kink solution of the Sine Gordon Equation using the Inverse Scattering Method as a methodological…

可精确求解与可积系统 · 物理学 2018-03-23 Matej Hudak , Jana Tothova , Ondrej Hudak

A class of negative order Ablowitz--Kaup--Newell--Segur nonlinear evolution equations are obtained by applying the Lax hierarchy of the first order linear system of three equations. The inverse scattering problem on the whole axis are…

可精确求解与可积系统 · 物理学 2024-08-08 Mansur I. Ismailov , Cihan Sabaz

Consider the inverse random source scattering problem for the two-dimensional time-harmonic elastic wave equation with an inhomogeneous, anisotropic mass density. The source is modeled as a microlocally isotropic generalized Gaussian random…

偏微分方程分析 · 数学 2018-12-27 Jianliang Li , Peijun Li

We consider the direct and inverse scattering problem for a penetrable, isotropic obstacle with a second-order Robin boundary condition, which asymptotically models the delamination of the boundary of the scatterer. We develop a direct…

偏微分方程分析 · 数学 2026-01-22 Govanni Granados , Isaac Harris , Andreas Kleefeld

This paper is concerned with the direct and inverse random source scattering problems for elastic waves where the source is assumed to be driven by an additive white noise. Given the source, the direct problem is to determine the…

偏微分方程分析 · 数学 2016-08-10 Gang Bao , Chuchu Chen , Peijun Li

We study an inverse random obstacle scattering problems in $\mathbb{R}^2$ where the scatterer is formulated by a Gaussian process defined on the angular parameter domain. Equipped with a modified covariance function which is mathematically…

数值分析 · 数学 2026-02-02 Zhiqi Sun , Xiang Xu , Yiwen Lin

We establish the inverse spectral transform for the conservative Camassa-Holm flow with decaying initial data. In particular, it is employed to prove existence of weak solutions for the corresponding Cauchy problem.

谱理论 · 数学 2017-07-27 Jonathan Eckhardt

We study the inverse scattering from a screen with using only one incoming time--harmonic plane wave but with measurements of the scattered wave done at all directions. Especially we focus on the 2D--case i.e. (inverse) scattering from an…

偏微分方程分析 · 数学 2024-09-05 Emilia Blåsten , Petri Ola , Lassi Päivärinta