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The purpose of this paper is to establish a geometric scattering result for a conformally invariant nonlinear wave equation on an asymptotically simple spacetime. The scattering operator is obtained via trace operators at null infinities.…

偏微分方程分析 · 数学 2019-07-18 Jérémie Joudioux

We consider the Cauchy problem on nonlinear scalar conservation laws with a diffusion-type source term related to an index $s\in \R$ over the whole space $\R^n$ for any spatial dimension $n\geq 1$. Here, the diffusion-type source term…

偏微分方程分析 · 数学 2011-04-08 Renjun Duan , Lizhi Ruan , Changjiang Zhu

We prove several scattering results for dispersion-managed nonlinear Schr\"odinger equations. In particular, we establish small-data scattering for both `intercritical' and `mass-subcritical' powers by suitable modifications of the standard…

偏微分方程分析 · 数学 2024-07-17 Jumpei Kawakami , Jason Murphy

We investigate the large time behavior of the solutions to the nonlinear focusing Schr\"odinger equation with a time-dependent damping in the energy sub-critical regime. Under non classical assumptions on the unsteady damping term, we prove…

偏微分方程分析 · 数学 2025-02-11 Makram Hamouda , Mohamed Majdoub

We study global existence of solutions to the Cauchy problem for the wave equation with time-dependent damping and a power nonlinearity in the overdamping case. We prove the global well-posedness for small data in the energy space for the…

偏微分方程分析 · 数学 2021-12-14 Masahiro Ikeda , Yuta Wakasugi

In this paper, we study the initial boundary value problem for the nonlinear wave equation with combined power-type nonlinearities with variable coefficients. The global behavior of the solutions with non-positive and sub-critical energy is…

偏微分方程分析 · 数学 2023-10-31 Milena Dimova , Natalia Kolkovska , Nikolai Kutev

We review some recent results on the theory of scattering and more precisely on the local Cauchy problem at infinity in time for some long range nonlinear systems including some form of the Schr"odinger equation. We consider in particular…

偏微分方程分析 · 数学 2007-05-23 J. Ginibre , G. Velo

We prove small data scattering in the mass-subcritical regime for the NLS equation with double nonlinearities, where a focusing leading term is perturbed by a lower order defocusing nonlinear term. Our proof relies on the pseudo-conformal…

偏微分方程分析 · 数学 2025-11-07 Jacopo Bellazzini , Luigi Forcella , Vladimir Georgiev

We investigate existence and uniqueness of solutions of the Cauchy problem for the porous medium equation on a class of Cartan-Hadamard manifolds. We suppose that the radial Ricci curvature, which is everywhere nonpositive as well as…

偏微分方程分析 · 数学 2017-12-14 Matteo Muratori , Fabio Punzo

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

We carry out numerical simulations of the defocusing energy-supercritical nonlinear wave equation for a range of spherically-symmetric initial conditions. We demonstrate numerically that the critical Sobolev norm of solutions remains…

数值分析 · 数学 2020-10-28 Jason Murphy , Yanzhi Zhang

Many-body quantum-mechanical scattering problem is solved asymptotically when the size of the scatterers (inhomogeneities) tends to zero and their number tends to infinity. A method is given for calculation of the number of small…

数学物理 · 物理学 2015-05-20 A. G. Ramm

We generalize the results of Villarroel, Fokas and Ioannidou, Dai, Terng and Uhlenbeck to study the inverse scattering problem of the Ward equation with non-small data and solve the Cauchy problem of the Ward equation with a non-small…

偏微分方程分析 · 数学 2008-06-03 Derchyi Wu

We study the Cauchy problems for the Hartree-type nonlinear Dirac equations with Yukawa-type potential derived from pseudoscalar field. We establish scattering for large data but with a relatively small part of initial data associated with…

偏微分方程分析 · 数学 2023-03-03 Yonggeun Cho , Seokchang Hong , Tohru Ozawa

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

We study the stabilization and the wellposedness of solutions of the wave equation with subcritical semilinearities and locally distributed nonlinear dissipation. The novelty of this paper is that we deal with the difficulty that the main…

In this paper, we consider the Cauchy problem of Nonlinear Schr\"{o}dinger equation \begin{align*} \left\{\begin{array}{ll}&i u_t+\Delta u=\lambda_1|u|^{p_1}u+\lambda_2|u|^{p_2}u, \quad t\in\mathbb{R}, \quad x\in\mathbb{R}^N…

偏微分方程分析 · 数学 2013-06-04 Xianfa Song

In this article, we prove that small localized data yield solutions to Higher order Korteweg-de Vries type equation with scattering-supercritical nonlinearity have linear dispersive decay in only a finite length of time. The proof is done…

偏微分方程分析 · 数学 2022-10-13 Jongwon Lee

We investigate in this paper the Cauchy problem of the one-dimensional wave equation with space-dependent damping of the form $\mu_0(1+x^2)^{-1/2}$, where $\mu_0>0$, and time derivative nonlinearity. We establish global existence of mild…

偏微分方程分析 · 数学 2025-07-22 Ahmad Z. Fino , Mohamed Ali Hamza

We begin a study of a multi-parameter family of Cauchy initial-value problems for the modified nonlinear Schr\"odinger equation, analyzing the solution in the semiclassical limit. We use the inverse scattering transform for this equation,…

可精确求解与可积系统 · 物理学 2012-08-09 Jeffery C. DiFranco , Peter D. Miller