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We develop and apply a fully covariant 1+3 electromagnetic analogy for gravity. The free gravitational field is covariantly characterized by the Weyl gravito-electric and gravito-magnetic spatial tensor fields, whose dynamical equations are…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Roy Maartens , Bruce A. Bassett

A recent suggestion that vector potentials in electrodynamics (ED) are nontensorial objects under 4D frame rotations is found to be both unnecessary and confusing. As traditionally used in ED, a vector potential $A$ always transforms…

综合物理 · 物理学 2015-09-24 C. W. Wong

Maxwell's equations are formulated in arbitrary moving frames by means of tetrad fields, which are interpreted as reference frames adapted to observers in space-time. We assume the existence of a general distribution of charges and currents…

经典物理 · 物理学 2010-12-01 J. W. Maluf , S. C. Ulhoa

We discuss under what conditions the duality between electric and magnetic fields is a valid symmetry of macroscopic quantum electrodynamics. It is shown that Maxwell's equations in the absence of free charges satisfy duality invariance on…

量子物理 · 物理学 2009-12-14 Stefan Yoshi Buhmann , Stefan Scheel

The article is devoted to application of tensorial formalism for derivation of different types of Maxwell's equations. The Maxwell's equations are written in the covariant coordinate-free and the covariant coordinate forms. Also the…

数学物理 · 物理学 2013-12-02 D. S. Kulyabov , A. V. Korolkova

We show that a three rank Lanczos type tensor field is an appropriate choice to describe relativistic electromagnetic and gravitational effects. More precisely, we identify the irreducible field-decompositions of this tensor as…

广义相对论与量子宇宙学 · 物理学 2023-09-14 Mikael Normann

This article explores the differences between frame and coordinate transformations in relativistic theories. We highlight the key role of tetrad fields in connecting spacetime and frame indices. Using Maxwell's electrodynamics as an…

广义相对论与量子宇宙学 · 物理学 2024-05-15 F. L. Carneiro , S. C. Ulhoa , M. P. Lobo

The purpose of this effort is to investigate if the use of quaternion mathematics can be used to better model and simulate the electromagnetic fields that occur from moving electromagnetic charges. One observed deficiency with the commonly…

经典物理 · 物理学 2022-09-30 Matthew David Marko , Joe Schaff

The purpose of this paper is to explore, in a space of four-dimensions, the possible forms that second-order, bi-scalar-vector-tensor field equations derivable from a variational principle can assume. In order to restrict this enormous…

广义相对论与量子宇宙学 · 物理学 2026-04-21 Gregory W. Horndeski

The statement that Maxwell's electrodynamics in vacuum is already covariant under Lorentz transformations is commonplace in the literature. We analyse the actual meaning of that statement and demonstrate that Maxwell's equations are…

经典物理 · 物理学 2023-04-10 D V Redzic

Using generalized field strength tensors for non-Abelian tensor gauge fields one can explicitly construct all possible Lorentz invariant quadratic forms for rank-4 non-Abelian tensor gauge fields and demonstrate that there exist only two…

高能物理 - 理论 · 物理学 2008-11-26 G. Savvidy , T. Tsukioka

Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approach to visualizing spacetime curvature. In analogy to…

广义相对论与量子宇宙学 · 物理学 2015-06-11 Kenneth A. Dennison , Thomas W. Baumgarte

A connection between Maxwell's equations, Newton's laws, and the special theory of relativity is established with a derivation that begins with Newton's verbal enunciation of his first two laws. Derived equations are required to be…

经典物理 · 物理学 2008-07-17 Allan D. Pierce

Modern undergraduate textbooks in electricity and magnetism typically focus on a force representation of electrodynamics with an emphasis on Maxwell's Equations and the Lorentz Force Law. The vector potential $\mathbf{A}$ and scalar…

综合物理 · 物理学 2008-07-15 T. Stein

Maxwell's equations cannot describe a homogeneous and isotropic universe with a uniformly distributed net charge, because the electromagnetic field tensor in such a universe must be vanishing everywhere. For a closed universe with a nonzero…

广义相对论与量子宇宙学 · 物理学 2016-03-01 Li-Xin Li

Detailed study of the energy and momentum carried by the electromagnetic field can be a source of clues to possible new physics underlying the Maxwell Equations. But such study has been impeded by expressions for the parameters of the…

综合物理 · 物理学 2021-05-11 Oliver Davis Johns

We study a non-local ghost-free Lorentz invariant modification of the Maxwell equations in four- and higher-dimensional flat spacetimes. We construct solutions of these equations for stationary charged and magnetized objects and use them to…

高能物理 - 理论 · 物理学 2021-02-24 Jens Boos , Valeri P. Frolov , Jose Pinedo Soto

In the past five years, there has been considerable research on the collider phenomenology of TeV-scale extra compact dimensions which are universal - i.e. accessible to all the Standard Model fields. We consider in detail a fundamental…

高能物理 - 唯象学 · 物理学 2007-05-23 A. W. McDavid , C. D. McMullen

This paper resolves a persistent ambiguity regarding the covariant formulation of electrodynamics in a vacuum, as well as of Minkowski's electrodynamics of moving isotropic media. By analyzing a recent debate, we demonstrate that current…

经典物理 · 物理学 2026-05-28 D V Redžić

We derive a 4D covariant Relativistic Dynamics Equation. This equation canonically extends the 3D relativistic dynamics equation $\mathbf{F}=\frac{d\mathbf{p}}{dt}$, where $\mathbf{F}$ is the 3D force and $\mathbf{p}=m_0\gamma\mathbf{v}$ is…

综合物理 · 物理学 2015-06-12 Yaakov Friedman , Tzvi Scarr