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A generalization of the Einstein equation is considered for complex line elements. Several second order semilinear partial differential equations are derived from it as semilinear field equations in uniform and isotropic spaces. The…

数学物理 · 物理学 2016-03-16 Makoto Nakamura

We will provide detailed arguments showing that the set of Maxwell equations, and the corresponding wave equations, do not properly describe the evolution of electromagnetic wave-fronts. We propose a nonlinear corrected version that is…

综合物理 · 物理学 2018-03-28 D. Funaro

While the electromagnetic force is microscopically simply the Lorentz force, its macroscopic form is more complicated, and given by expressions such as the Maxwell stress tensor and the Kelvin force. Their derivation is fairly opaque, at…

软凝聚态物质 · 物理学 2012-07-23 Mario Liu , Klaus Stierstadt

Simply by assuming the first postulate of Special Relativity and by exploring Gedankenexperiments with electromagnetic forces, we suggest that there is a speed limit in the universe, which can be determined as a relation between vacuum…

经典物理 · 物理学 2018-11-06 Sergio Eduardo Silva Duarte , Nathan Willig Lima

We develop a thermodynamic framework that couples mass dynamics, described by the Newton- Gibbs-van der Waals formalism, with electromagnetic fields beyond the scope of classical Maxwell theory. Classical Newtonian mechanics does not…

经典物理 · 物理学 2025-12-23 Fei Wang

We present new static spherically-symmetric exact solutions of Einstein equations with the quintessential matter surrounding a black hole charged or not as well as for the case without the black hole. A condition of additivity and linearity…

广义相对论与量子宇宙学 · 物理学 2010-11-19 V. V. Kiselev

A model of spontaneous Lorentz violation in four dimension is given, which seems to provide a Lorentz invariant effective theory. An SU(2) Yang-Mills gauge field and an auxiliary U(1) vector field generate gravity and other interactions…

综合物理 · 物理学 2021-03-31 Kimihide Nishimura

A great number of macroquantum laws connecting gravity and electromagnetism if found empirically. To describe them the model of anisotropic gravitational field is proposed. This field is build as a superposition of planes and force lines…

综合物理 · 物理学 2007-05-23 Alexander M. Ilyanok

In general relativity, Maxwell's equations are embedded in curved spacetime through the minimal prescription, but this could change if strong-gravity modifications are present. We show that with a nonminimal coupling between gravity and a…

广义相对论与量子宇宙学 · 物理学 2019-02-27 Lorenzo Annulli , Vitor Cardoso , Leonardo Gualtieri

We find new classes of exact solutions to the Einstein-Maxwell system of equations for a charged sphere with a particular choice of the electric field intensity and one of the gravitational potentials. The condition of pressure isotropy is…

广义相对论与量子宇宙学 · 物理学 2009-03-19 K. Komathiraj , S. D. Maharaj

We derive Einstein's equations from a linear theory in flat space-time using free-field gauge invariance and universal coupling. The gravitational potential can be either covariant or contravariant and of almost any density weight. We adapt…

广义相对论与量子宇宙学 · 物理学 2008-11-26 J. Brian Pitts , W. C. Schieve

Previously we conjectured that extremely high Electromagnetic (EM) fields in a vacuum generate a gravitational field that causes Maxwell's equations to no longer be linear. This results in a "4-force" in the field configuration space, also…

综合物理 · 物理学 2023-12-12 Pierre Marx

A general theory of electric charge is proposed. It is based on two phenomenologies. Electric charge mutation and conservation law. Three charges $\{ +, - ,0\}$ transformations physics succeeds. Quantum field theory underlies corresponding…

综合物理 · 物理学 2023-02-15 R. Doria , L. S. Mendes

The two postulates of special relativity plus the postulates of conserved charges, both electric and magnetic, and a resulting linear system are sufficient for the derivation of the generalized vacuum Maxwell equations with both charges.…

综合物理 · 物理学 2013-05-15 Chun Wa Wong

From the relativistic law of motion we attempt to deduce the field theories corresponding to the force law being linear and quadratic in 4-velocity of the particle. The linear law leads to the vector gauge theory which could be the abelian…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Parampreet Singh , Naresh Dadhich

Recent developments in observational cosmology have led to attempts to make modifications on both sides of the Einstein equation to explain some of the puzzling new findings. What follows is an examination of the source of gravity that we…

宇宙学与河外天体物理 · 物理学 2014-01-23 Edward A Spiegel

Starting from the action function, we have derived a theoretical background that leads to the quantization of gravity and the deduction of a correlation between the gravitational and the inertial masses, which depends on the kinetic…

综合物理 · 物理学 2014-02-18 Fran De Aquino

Riemannian and teleparallel geometrical approaches to the investigation of Maxwell electrodynamics shown that a unified field theory of gravitation and electromagnetism a la Einstein can be obtained from a stationary metric. This idea…

广义相对论与量子宇宙学 · 物理学 2007-05-23 L. C. Garcia de Andrade

Electromagnetic fields of an accelerated charge are derived from the first principles using Coulomb's law and the relativistic transformations. The electric and magnetic fields are derived first for an instantaneous rest frame of the…

经典物理 · 物理学 2013-06-11 Ashok K. Singal

The field equations of the original Kaluza's theory are analyzed and it is shown that they lead to modification of Einstein's equations. The appearing extra energy-momentum tensor is studied and an example is given where this extra…

高能物理 - 理论 · 物理学 2009-09-24 Rossen I. Ivanov , Emil M. Prodanov