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This paper investigates the existence and uniqueness of local strong solutions to the three-dimensional compressible magnetohydrodynamic (MHD) equations with density-dependent viscosities in an exterior domain. The system models the…

偏微分方程分析 · 数学 2025-04-08 Hairong Liu , Tao Luo , Hua Zhong

The aim of this paper is to understand the influence of a dissipative term which is small in the sense that it is asymptotically below scaling on the asymptotic properties of solutions. A diagonalization procedure is applied in order to…

偏微分方程分析 · 数学 2007-05-23 Jens Wirth

The initial-value problem for the drift-diffusion equation arising from the model of semiconductor device simulations is studied. The dissipation on this equation is given by the fractional Laplacian. When the exponent of the fractional…

偏微分方程分析 · 数学 2016-05-25 Masakazu Yamamoto , Yuusuke Sugiyama

We consider a nonlinear parabolic equation with an exponential nonlinearity which is critical with respect to the growth of the nonlinearity and the regularity of the initial data. After showing the equivalence of the notions of weak and…

偏微分方程分析 · 数学 2017-12-01 Giulia Furioli , Tatsuki Kawakami , Bernhard Ruf , Elide Terraneo

This paper concerns the long time existence to the smooth solutions of the compressible Euler system with critical time dependent damping in $\R^2$. We establish the sharp lifespan estimate from below, with respect to the small parameter of…

偏微分方程分析 · 数学 2024-02-20 Lv Cai , Ning-An Lai , Wen-Ze Su

We consider the asymptotic behavior as time goes to infinity of the $L^{2}$-norm of the velocity of the linearized compressible Navier-Stokes equations in ${\bf R}^{n}$ ($n \geq 2$). As an application we shall study the optimality of the…

偏微分方程分析 · 数学 2018-05-30 Ruy Coimbra Charao , Ryo Ikehata

We study the time-asymptotic behavior of solutions of the Schr\"odinger equation with nonlinear dissipation \begin{equation*} \partial _t u = i \Delta u + \lambda |u|^\alpha u \end{equation*} in ${\mathbb R}^N $, $N\geq1$, where $\lambda\in…

偏微分方程分析 · 数学 2020-05-14 Thierry Cazenave , Zheng Han

The asymptotic behavior of weak time-periodic solutions to the Navier-Stokes equations with a drift term in the three-dimensional whole space is investigated. The velocity field is decomposed into a time-independent and a remaining part,…

偏微分方程分析 · 数学 2020-05-28 Thomas Eiter

Whether the global well-posedness of strong solutions of $n$-dimensional compressible isentropic magnetohydrodynamic (MHD for short) equations without magnetic diffusion holds true or not remains an challenging open problem, even for the…

偏微分方程分析 · 数学 2024-02-19 Quansen Jiu , Jitao Liu , Yaowei Xie

In this paper, we obtain the global well-posedness and the asymptotic behavior of solution of non-resistive 2D MHD problem on the half space. We overcome the difficulty of zero spectrum gap by building the relationship between half space…

偏微分方程分析 · 数学 2024-01-22 Jiakun Jin , Yoshiyuki Kagei , Xiaoxia Ren , Lei Wang , Cuili Zhai

We investigate a decomposition of a unital Lindblad dynamical map of an open quantum system into two distinct types of mapping on the Hilbert-Schmidt space of quantum states. One component of the decomposed map corresponds to reversible…

量子物理 · 物理学 2019-02-18 Fattah Sakuldee , Sujin Suwanna

In this paper, we study the long-time behavior of the solution for the linearized ideal MHD around sheared velocity and magnetic field under Stern stability condition. We prove that the velocity and magnetic field will converge to sheared…

偏微分方程分析 · 数学 2021-03-29 Han Liu , Nader Masmoudi , Cuili Zhai , Weiren Zhao

In this article, we consider the evolutionary model for magnetoelasticity with vanishing viscosity/damping, which is a nonlinear dispersive system. The global regularity and scattering of the evolutionary model for magnetoelasticity under…

偏微分方程分析 · 数学 2024-02-27 Xiaonan Hao , Jiaxi Huang , Ning Jiang , Lifeng Zhao

In Class. Quantum Grav. 26 (2009) 175006 (arXiv:0812.4333v3) Bizon et al discuss the power-law tail in the long-time evolution of a spherically symmetric self-gravitating massless scalar field in odd spatial dimensions. They derive explicit…

广义相对论与量子宇宙学 · 物理学 2010-04-30 Nikodem Szpak

We first construct the global unique solution by assuming that the initial data is small in the H^3 norm but its higher order derivatives could be large. If further the initial data belongs to \Dot{H}^{-s} (0\le s<3/2) or…

偏微分方程分析 · 数学 2012-12-27 Zhong Tan , Yong Wang

We study a general convergence theory for the analysis of numerical solutions to the magnetohydrodynamic system describing the time evolution of compressible, viscous, electrically conducting fluids in space dimension d (= 2; 3). First, we…

偏微分方程分析 · 数学 2021-06-21 Yang Li , Bangwei She

The authors study the Cauchy problem of the magnetohydrodynamic equations for viscous compressible barotropic flows in two or three spatial dimensions with vacuum as far field density. For two spatial dimensions, we establish the global…

偏微分方程分析 · 数学 2014-05-21 Boqiang Lv , Xiaoding Shi , Xinying Xu

We study the dissipation of moving magnets in levitation above a superconductor. The rotation motion is analyzed using optical tracking techniques. It displays a remarkable regularity together with long damping time up to several hours. The…

介观与纳米尺度物理 · 物理学 2015-06-16 Jérémie Druge , Oscar Laurent , Marie-Aude Méasson , Ivan Favero

This paper mainly focus on optimal time decay estimation for large-solution about compressible magnetohydrodynamic equations in 3D whole space, provided that $(\sigma_{0}-1,u_{0},M_{0})\in L^1\cap H^2$. In [2](Chen et al.,2019), they proved…

偏微分方程分析 · 数学 2022-06-13 Shuai Wang , Fei Chen , Chuanbao Wang

We study the behavior at infinity, with respect to the space variable, of solutions to the magnetohydrodynamics equations in ${\bf R}^d$. We prove that if the initial magnetic field decays sufficiently fast, then the plasma flow behaves as…

偏微分方程分析 · 数学 2009-07-17 Lorenzo Brandolese , François Vigneron