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We prove a large-data semi-global existence theorem and the dynamical formation of trapped surfaces for the Einstein-massless Vlasov system in 3+1 dimensions, without any symmetry assumptions. The analysis critically hinges on a finely…

偏微分方程分析 · 数学 2025-10-15 Nikolaos Athanasiou , Puskar Mondal , Shing-Tung Yau

In this paper we obtain the wave equation modeling the nematic liquid-crystals in three space dimensions and study the lifespan of classical solution to Cauchy problem. The almost global existence to classical solution for small initial…

偏微分方程分析 · 数学 2012-08-02 Yi Du , Geng Chen , Jianli Liu

Three theoretical criteria for gravitational theories beyond general relativity are considered: obtaining the cosmological constant as an integration constant, deriving the energy conservation law as a consequence of the field equations,…

广义相对论与量子宇宙学 · 物理学 2023-08-17 Junpei Harada

We consider the relativistic Vlasov-Maxwell system (RVM) on a general axisymmetric spatial domain with perfect conducting boundary which reflects particles specularly, assuming axisymmetry in the problem. We construct continuous global…

偏微分方程分析 · 数学 2023-11-14 Katherine Zhiyuan Zhang

The motion of a collisionless plasma is described by the Vlasov-Poisson system, or in the presence of large velocities, the relativistic Vlasov-Poisson system. Both systems are considered in one space and one momentum dimension, with two…

偏微分方程分析 · 数学 2010-03-01 Stephen Pankavich , Robert Glassey , Jack Schaeffer

In this paper we are concerned with the global existence of smooth solutions to the turbulent flow equations for compressible flows in $\mathbb{R}^3$. The global well-posedness is proved under the condition that the initial data are close…

偏微分方程分析 · 数学 2012-04-10 Dongfen Bian , Boling Guo

In this paper, we investigate the existence of a global classical solution to 3D Cauchy problem of the isentropic compressible Navier-Stokes equations with large initial data and vacuum. Precisely, when the far-field density is vacuum…

偏微分方程分析 · 数学 2015-07-07 Xiaofeng Hou , Hongyun Peng , Changjiang Zhu

We introduce a cosmological model in the framework of Generalised Massive Gravity. This theory is an extension of non-linear massive gravity with a broken translation symmetry in the St\"uckelberg space. In a recent work, we showed the…

广义相对论与量子宇宙学 · 物理学 2020-11-25 Michael Kenna-Allison , A. Emir Gumrukcuoglu , Kazuya Koyama

This paper is concerned with the global existence and uniqueness of classical solutions to the barotropic compressible Navier-Stokes equations with degenerate viscosity coefficients in three-dimensional bounded domains or in the whole space…

偏微分方程分析 · 数学 2026-05-01 Qinghao Lei

In this paper, we are concerned with the global well-posedness and time-asymptotic decay of the Vlasov-Fokker-Planck equation with local alignment forces. The equation can be formally derived from an agent-based model for self-organized…

偏微分方程分析 · 数学 2016-06-22 Young-Pil Choi

In this paper, we study the global existence of classical solutions to the three dimensional incompressible viscous magneto-hydrodynamical system without magnetic diffusion on periodic boxes, i.e., with periodic boundary conditions. We work…

偏微分方程分析 · 数学 2018-03-06 Ronghua Pan , Yi Zhou , Yi Zhu

The kinetic approach to the formation of the filaments in the large-scale matter distribution in the Universe is considered within the Vlasov formalism. The structures arise due to the self-consistent dynamics, along with the repulsive term…

宇宙学与河外天体物理 · 物理学 2022-10-19 V. G. Gurzadyan , N. N. Fimin , V. M. Chechetkin

The spherically symmetric Einstein-Vlasov system in Schwarzschild coordinates (i.e. polar slicing and areal radial coordinate) is considered. An improved continuation criterion for global existence of classical solutions is given. Two other…

广义相对论与量子宇宙学 · 物理学 2011-08-04 Hakan Andreasson

We establish the global well-posedness of classical solutions to the vacuum free boundary problem of the 1-D viscous Saint-Venant system with large data. Since the depth $\rho$ of the fluid vanishes on the moving boundary, the momentum…

偏微分方程分析 · 数学 2025-04-15 Xin Zhouping , Zhang Jiawen , Zhu Shengguo

We investigate the barotropic compressible Navier-Stokes equations with slip boundary conditions in a three-dimensional (3D) simply connected bounded domain, whose smooth boundary has a finite number of two-dimensional connected components.…

偏微分方程分析 · 数学 2025-04-23 Guocai Cai , Jing Li

We consider the Vlasov-Poisson system in a cosmological setting and prove nonlinear stability of homogeneous solutions against small, spatially periodic perturbations in the sup-norm of the spatial mass density. This result is connected…

广义相对论与量子宇宙学 · 物理学 2009-10-28 Gerhard Rein

We study the Einstein-Vlasov system coupled to a nonlinear scalar field with a nonnegative potential in locally spatially homogeneous spacetime, as an expanding cosmological model. It is shown that solutions of this system exist globally in…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Hayoung Lee

In this work, we consider the smoothing effect of Vlasov-Poisson-Landau system for both hard and soft potential. In particular, we prove that any classical solutions becomes immediately smooth with respect to all variables. We also give a…

偏微分方程分析 · 数学 2024-02-08 Dingqun Deng

A modified-gravity-type model of two hypothetical massless vector fields is presented. These vector fields are gravitationally coupled to standard matter and an effective cosmological constant. Considered in a cosmological context, the…

高能物理 - 理论 · 物理学 2012-05-10 V. Emelyanov , F. R. Klinkhamer

We study smooth, spherically-symmetric solutions to the Vlasov-Poisson system and relativistic Vlasov-Poisson system in the plasma physical case. We construct solutions that initially possess arbitrarily small C^k norms for the charge…

偏微分方程分析 · 数学 2019-10-15 Katherine Zhiyuan Zhang