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We study the Cauchy problem for a kinetic equation arising in the weak turbulence theory for the cubic nonlinear Schr\"odinger equation. We define suitable concepts of weak and mild solutions and prove local and global well posedness…

Mathematical Physics · Physics 2013-05-27 Miguel Escobedo , Juan J. L. Velázquez

This paper mainly investigates the Cauchy problem of the spatially weighted dissipative equation with initial data in the weighted Lebesgue space. A generalized Hankel Transform is introduced to derive the analytical solution and a special…

Analysis of PDEs · Mathematics 2016-09-13 Ziheng Tu , Xiaojun Lu

This paper aims to show global existence and modified scattering for the solutions of the Cauchy problem to the modified Whitham equations for small, smooth and localized initial data. The main difficulties come from slow decay and…

Analysis of PDEs · Mathematics 2025-05-15 Han Cui , Yuexun Wang , Zhouping Xin

In this paper, we would like to consider the Cauchy problem for a weakly coupled system of semi-linear damped wave equations with mixed nonlinear terms. Our main objective is to draw conclusions about the critical curve of this problem…

Analysis of PDEs · Mathematics 2025-10-07 Dinh Van Duong , Tuan Anh Dao , Masahiro Ikeda

We solve the Cauchy problem of the Ward equation with both continuous and discrete scattering data.

Exactly Solvable and Integrable Systems · Physics 2009-11-13 Derchyi Wu

The open question, which seems to be also the final part, in terms of studying the Cauchy problem for the weakly coupled system of damped wave equations or reaction-diffusion equations, is so far known as the sharp lifespan estimates in the…

Analysis of PDEs · Mathematics 2022-01-27 Wenhui Chen , Tuan Anh Dao

We investigate scattering properties of a Moyal deformed version of the nonlinear Schr\"odinger equation in an even number of space dimensions. With rather weak conditions on the degree of nonlinearity, the Cauchy problem for general…

Mathematical Physics · Physics 2014-11-18 Bergfinnur Durhuus , Victor Gayral

In this paper we study the Cauchy problem for one multidimensional compressible nonlocal model of the dissipative quasi-geostrophic equations. First, we obtain the local existence and uniqueness of the smooth non-negative solution or the…

Analysis of PDEs · Mathematics 2012-02-07 Shu Wang , Li Linrui , Shengtao Chen

We establish the existence of a conservative weak solution to the Cauchy problem for the nonlinear variational wave equation $u_{tt} - c(u)(c(u)u_x)_x=0$, for initial data of finite energy. Here $c(\cdot)$ is any smooth function with…

Analysis of PDEs · Mathematics 2009-11-11 Alberto Bressan , Yuxi Zheng

We reconsider the theory of scattering for some long range Hartree equations with potential |x|^-gamma with 1/2 < gamma < 1. More precisely we study the local Cauchy problem with infinite initial time, which is the main step in the…

Analysis of PDEs · Mathematics 2012-11-20 J. Ginibre , G. Velo

We study the scalar, conformally invariant wave equation on a four-dimensional Minkowski background in spherical symmetry, using a fully pseudospectral numerical scheme. Thereby, our main interest is in a suitable treatment of spatial…

General Relativity and Quantum Cosmology · Physics 2014-04-03 Jörg Frauendiener , Jörg Hennig

The Cauchy problem is considered for the scalar wave equation in the Schwarzschild geometry. Using an integral spectral representation we derive the exact decay rate for solutions of the Cauchy problem with spherical symmetric initial data,…

General Relativity and Quantum Cosmology · Physics 2007-09-25 Johann Kronthaler

We study the Cauchy problem for the semi-linear damped wave equation in any space dimension. We assume that the time-dependent damping term is effective. We prove the global existence of small energy data solutions in the supercritical…

Analysis of PDEs · Mathematics 2013-05-07 Marcello D'Abbicco , Sandra Lucente , Michael Reissig

We consider the Cauchy problem for the defocusing power type nonlinear wave equation in $(1+3)$-dimensions for energy subcritical powers $p$ in the range $3 < p< 5$. We prove that any solution is global-in-time and scatters to free waves in…

Analysis of PDEs · Mathematics 2020-11-18 Benjamin Dodson , Andrew Lawrie , Dana Mendelson , Jason Murphy

In this paper we consider some dissipative versions of the modified Korteweg de Vries equation $u_t+u_{xxx}+|D_x|^{\alpha}u+u^2u_x=0$ with $0<\alpha\leq 3$. We prove some well-posedness results on the associated Cauchy problem in the…

Analysis of PDEs · Mathematics 2008-10-23 Wengu Chen , Junfeng Li , Changxing Miao

In this paper, we consider the Cauchy problem for a non-homogeneous wave equation generated by the fractional Laplacian and involving different kinds of lower order terms. We allow the equation coefficients and data to be of distributional…

Analysis of PDEs · Mathematics 2025-03-13 Manel Bouguenna , Mohammed Elamine Sebih

This paper aims to give a refined wave breaking description of the Cauchy problem to the one-dimensional nonlinear shallow water equations providing a sharp estimate of the lifespan of the solutions depending on the amplitude and topography…

Analysis of PDEs · Mathematics 2026-02-26 Pingchun Liu , Jean-Claude Saut , Shihan Sun , Yuexun Wang

In this paper we consider an acoustic problem of wave propagation through a discontinuous medium. The problem is reduced to the dissipative wave equation with distributional dissipation. We show that this problem has a so-called very weak…

Analysis of PDEs · Mathematics 2017-05-04 Juan Carlos Munoz , Michael Ruzhansky , Niyaz Tokmagambetov

We consider the Cauchy problem in ${\bf R}^{n}$ for strongly damped wave equations. We derive asymptotic profiles of these solutions with weighted $L^{1,1}({\bf R}^{n})$ data by using a method introduced in [10].

Analysis of PDEs · Mathematics 2014-02-26 Ryo Ikehata

We consider radial solutions to the Cauchy problem for the linear wave equation with a small short-range electromagnetic potential (the "square version" of the massless Dirac equation with a potential) and zero initial data. We prove two a…

Analysis of PDEs · Mathematics 2007-05-23 Davide Catania