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Solutions of the Maxwell equations for electrostatic systems at rest on the rotating Earth's surface are shown to exhibit a nonvanishing magnetic field despite zero electric currents in the system. Such a field is of pure geometric origin,…

综合物理 · 物理学 2020-04-01 N. N. Nikolaev , S. N. Vergeles

We consider two elliptic coupled systems of relevance in the fluid dynamics. These systems are posed on the whole three-dimensional space and they consider the action of external forces. The first system deals with the simplified…

偏微分方程分析 · 数学 2023-04-05 Oscar Jarrín

Using an exact diagonalization technique within a generalized Mott-Hubbard Hamiltonian, we predict the existence of a ground state persistent current in coherent two-dimensional semiconductor quantum dot arrays pierced by an external…

介观与纳米尺度物理 · 物理学 2009-10-28 R. Kotlyar , S. Das Sarma

We consider a nematic liquid crystal flow with partially free boundary in a smooth bounded domain in $\mathbb{R}^2$. We prove regularity estimates and the global existence of weak solutions enjoying partial regularity properties, and a…

偏微分方程分析 · 数学 2023-08-09 Yannick Sire , Yantao Wu , Yifu Zhou

We study the global well-posedness of magnetohydrodynamic (MHD) equations. The hydrodynamic system consists of the Navier-Stokes equations for the fluid velocity coupled with a reduced from of the Maxwell equations for the magnetic field.…

偏微分方程分析 · 数学 2019-08-09 Chengfei Ai , Zhong Tan , Jianfeng Zhou

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

In this paper, we present the general governing equations of electrodynamics and continuum mechanics that need to be considered while mathematically modelling the behaviour of electromagnetic acoustic transducers (EMATs). We consider the…

数学物理 · 物理学 2015-02-10 Prashant Saxena

We prove the local-in-time existence of solutions with a contact discontinuity of the equations of ideal compressible magnetohydrodynamics (MHD) for 2D planar flows provided that the Rayleigh-Taylor sign condition $[\partial p/\partial…

偏微分方程分析 · 数学 2018-01-17 Alessandro Morando , Yuri Trakhinin , Paola Trebeschi

In this paper, we are concerned with the validity of Prandtl boundary layer expansion for the solutions to two dimensional (2D) steady viscous incompressible magnetohydrodynamics (MHD) equations in a domain $\{(X, Y)\in[0,…

偏微分方程分析 · 数学 2020-01-20 Shijin Ding , Zhilin Lin , Feng Xie

An analytical solution of Einstein-Maxwell equations with a static fluid as a source is presented. The spacetime is represented by the axially symmetric Weyl metric and the energy-momentum tensor describes a coupling of a fluid with an…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Jose D. Polanco , Patricio S. Letelier , Maximiliano Ujevic

In this paper, we are concerned with the motion of electrically conducting fluid governed by the two-dimensional non-isentropic viscous compressible MHD system on the half plane, with no-slip condition for velocity field, perfect conducting…

偏微分方程分析 · 数学 2018-03-20 Huang Yongting , Liu Cheng-Jie , Yang Tong

We study the existence of steady solutions of ideal magnetofluid systems (ideal MHD and ideal Euler equations) without continuous Euclidean symmetries. It is shown that all nontrivial magnetofluidostatic solutions are locally symmetric,…

数学物理 · 物理学 2019-11-12 Naoki Sato

We study Maxwell's equations in conducting media with perfectly conducting boundary conditions on Lipschitz domains, allowing rough material coefficients and $L^2$-data. Our first contribution is a direct proof of well-posedness of the…

数值分析 · 数学 2025-11-06 Harbir Antil

Thomson's theorem states that static charge distributions in conductors only exist at the conducting surfaces in an equipotential configuration, yielding a minimal electrostatic energy. In this work we present a proof for this theorem based…

经典物理 · 物理学 2009-07-05 M. C. N. Fiolhais , C. Providencia

The application of high-temperature superconductors to accelerator magnets for future particle colliders is under study. Numerical methods are crucial for an accurate evaluation of the complex dynamical behavior of the magnets, especially…

Physical experiments and numerical simulations have revealed a remarkable stabilizing phenomenon: a background magnetic field stabilizes and dampens electrically conducting fluids. This paper provides a rigorous mathematical justification…

偏微分方程分析 · 数学 2025-10-29 Qunyi Bie , Hui Fang , Yanping Zhou

Due to the absence of dissipation mechanism to the inviscid compressible systems, it is a challenging problem to prove their global solvability. In this paper, we are concerned with the initial-boundary value problem to the inviscid and…

偏微分方程分析 · 数学 2025-08-20 Jinkai Li , Liening Qiao

We investigate inviscid instability in an electrically conducting fluid affected by a parallel magnetic field. The case of low magnetic Reynolds number in Poiseuille flow is considered. When the magnetic field is sufficiently strong, for a…

流体动力学 · 物理学 2013-07-22 A. V. Monwanou , J. B. Chabi Orou

We consider the Schr\"odinger operator with constant transverse magnetic field on a half-plane, endowed with Neumann boundary conditions. We study the low energy currents flowing along the boundary and we establish a Limiting Absorption…

数学物理 · 物理学 2023-08-09 Nicolas Raymond , Éric Soccorsi

A simplified transient energy-transport system for semiconductors subject to mixed Dirichlet-Neumann boundary conditions is analyzed. The model is formally derived from the non-isothermal hydrodynamic equations in a particular vanishing…

偏微分方程分析 · 数学 2012-06-26 Ansgar Jüngel , René Pinnau , Elisa Röhrig