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We study the Cauchy problem for the Schr\"odinger-improved Boussinesq system in a two dimensional domain. Under natural assumptions on the data without smallness, we prove the existence and uniqueness of global strong solutions. Moreover,…

偏微分方程分析 · 数学 2022-01-11 Tohru Ozawa , Kenta Tomioka

We establish the existence of solutions of the Cauchy problem for a higher-order semilinear parabolic equation by introducing a new majorizing kernel. We also study necessary conditions on the initial data for the existence of local-in-time…

偏微分方程分析 · 数学 2019-09-13 Kazuhiro Ishige , Tatsuki Kawakami , Shinya Okabe

We consider a characteristic initial value problem for a class of symmetric hyperbolic systems with initial data given on two smooth null intersecting characteristic surfaces. We prove existence of solutions on a future neighborhood of the…

广义相对论与量子宇宙学 · 物理学 2016-03-29 Aurore Cabet , Piotr T. Chruściel , Roger Tagne Wafo

We discuss the implementation, to the case of compact manifolds, of the perturbative method of Friedrich-Butscher for the construction of solutions to the vaccum Einstein constraint equations. This method is of a perturbative nature and…

广义相对论与量子宇宙学 · 物理学 2019-06-18 J. A. Valiente Kroon , J. L. Williams

We construct and parametrize solutions to the constraint equations of general relativity in a neighborhood of Minkowski spacetime with arbitrary prescribed decay properties at infinity. We thus provide a large class of initial data for the…

偏微分方程分析 · 数学 2025-02-27 Allen Juntao Fang , Jérémie Szeftel , Arthur Touati

We adapt Luk's analysis of the characteristic initial value problem in General Relativity to the asymptotic characteristic problem for the conformal Einstein field equations to demonstrate the local existence of solutions in a neighbourhood…

广义相对论与量子宇宙学 · 物理学 2020-06-25 David Hilditch , Juan A. Valiente Kroon , Peng Zhao

Based on scale critical initial data, we construct smooth asymptotically flat Cauchy initial data for the Einstein vacuum system that does not contain Marginally Outer Trapped Surfaces (MOTS) but whose future evolution contains a trapped…

偏微分方程分析 · 数学 2020-09-10 Nikolaos Athanasiou , Martin Lesourd

We consider a quasilinear system of hyperbolic equations that describes plane one-dimensional non-relativistic oscillations of electrons in a cold plasma with allowance for electron-ion collisions. Accounting for collisions leads to the…

数学物理 · 物理学 2021-01-08 Olga Rozanova , Eugeniy Chizhonkov , Maria Delova

We study the Cauchy problem for the Einstein-Boltzmann system with soft potentials in a cosmological setting. We assume the Bianchi I symmetry to describe a spatially homogeneous, but anisotropic universe and consider a cosmological…

广义相对论与量子宇宙学 · 物理学 2024-08-21 Ho Lee , Ernesto Nungesser

The Cauchy problem for a nonlinear elastic wave equations with viscoelastic damping terms is considered on the 3 dimensional whole space. Decay and smoothing properties of the solutions are investigated when the initial data are…

偏微分方程分析 · 数学 2021-11-09 Yoshiyuki Kagei , Hiroshi Takeda

This paper is devoted to the study of the global existence of smooth solutions for the 3+1 dimensional Einstein-Klein-Gordon systems with a $U(1) \times \mathbb{R}$ isometry group for a class of regular Cauchy data. In our first paper…

偏微分方程分析 · 数学 2019-05-23 Haoyang Chen , Yi Zhou

Lorentzian manifolds with parallel spinors are important objects of study in several branches of geometry, analysis and mathematical physics. Their Cauchy problem has recently been discussed by Baum, Leistner and Lischewski, who proved that…

微分几何 · 数学 2021-09-21 Bernd Ammann , Klaus Kroencke , Olaf Müller

We investigate the Cauchy problem of three-dimensional compressible non-isothermal nematic liquid crystal flows in $\mathbb{R}^3$. We derive the global existence and uniqueness of strong solutions with both interior and far field vacuum…

偏微分方程分析 · 数学 2021-08-24 Yang Liu , Xin Zhong

We consider the Cauchy problem for the full compressible Navier-Stokes equations with vanishing of density at infinity in R3. Our main purpose is to prove the existence (and uniqueness) of global strong and classical solutions and study the…

偏微分方程分析 · 数学 2017-02-22 Huanyao Wen , Changjiang Zhu

The global solutions with large initial data for the isothermal compressible fluid models of Korteweg type has been studied by many authors in recent years. However, little is known of global large solutions to the nonisothermal…

偏微分方程分析 · 数学 2015-11-10 Zhengzheng Chen , Lin He , Huijiang Zhao

We consider Lorentzian General Relativity in a cavity with a timelike boundary, with conformal boundary conditions and also a generalization of these boundary conditions. We focus on the linearized gravitational dynamics about the static…

广义相对论与量子宇宙学 · 物理学 2025-07-04 Xiaoyi Liu , Harvey S. Reall , Jorge E. Santos , Toby Wiseman

The Conformal Einstein equations and the representation of spatial infinity as a cylinder introduced by Friedrich are used to analyse the behaviour of the gravitational field near null and spatial infinity for the development of data which…

广义相对论与量子宇宙学 · 物理学 2009-11-10 J. A. Valiente Kroon

We prove well-posedness of the initial value problem for the Einstein equations for spatially-homogeneous cosmologies with data at an isotropic cosmological singularity, for which the matter content is either a cosmological constant with…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Paul Tod

We describe conformally flat initial data, with explicitly given analytic extrinsic curvature solving the vacuum momentum constraints. They follow from a solution of Dain and Friedrich discovered in 2001. The cylindrically symmetric subcase…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Janusz Karkowski , Edward Malec

This article is a guide to theorems on existence and global dynamics of solutions of the Einstein equations. It draws attention to open questions in the field. The local-in-time Cauchy problem, which is relatively well understood, is…

广义相对论与量子宇宙学 · 物理学 2015-06-25 Alan D. Rendall