Results 11 to 20 of about 591 (43)

Electromagnetic Potential in Pre-Metric Electrodynamics: Causal Structure, Propagators and Quantization [PDF]

open access: yes, 2016
An axiomatic approach to electrodynamics reveals that Maxwell electrodynamics is just one instance of a variety of theories for which the name electrodynamics is justified.
Pfeifer, Christian, Siemssen, Daniel
core   +3 more sources

An analog fluid model for some tachyonic effects in field theory

open access: yes, 2011
We consider the sound radiation from an acoustic point-like source moving along a supersonic ("space-like") trajectory in a fluid at rest. We call it an acoustic "tachyonic" source. We describe the radiation emitted by this supersonic source.
Abrikosov A. A.   +16 more
core   +1 more source

Classical diamagnetism, magnetic interaction energies, and repulsive forces in magnetized plasmas

open access: yes, 2011
The Bohr-van Leeuwen theorem is often summarized as saying that there is no classical magnetic susceptibility, in particular no diamagnetism. This is seriously misleading.
Alfvén Hannes   +24 more
core   +1 more source

A different interpretation of "Measuring propagation speed of Coulomb fields" by R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, G. Pizzella

open access: yes, 2016
We claim that the anti-relativistic statement in de Sangro et al., Eur. Phys. J. C 75, 137 (2015) that the Coulomb field of a moving charge propagates rigidly with it, cannot as a matter of fact be inferred from the measurements reported in that ...
Shabad, Anatoly
core   +1 more source

Axion Electrodynamics from Infeld-van der Waerden formalisms

open access: yes, 2018
In this article we will explore the spacetime phase structure inside the Infeld-van der Waerden formalisms, showing that Maxwell's theory in this scenario leads to an axion-like phase electrodynamics, which suggests that this phase may originate the ...
Fernandes-Silva, A.   +1 more
core   +1 more source

The physics of angular momentum radio

open access: yes, 2014
Wireless communications, radio astronomy and other radio science applications are predominantly implemented with techniques built on top of the electromagnetic linear momentum (Poynting vector) physical layer.
Ravanelli, R. A.   +4 more
core   +1 more source

Scattering in plane-wave backgrounds: infra-red effects and pole structure

open access: yes, 2012
We consider two aspects of scattering in strong plane wave backgrounds. First, we show that the infra-red divergences in elastic scattering depend on the structure of the background, but can be removed using the usual Bloch-Nordsieck approach. Second, we
Ilderton, Anton, Torgrimsson, Greger
core   +1 more source

First-order classical Lagrangians for the nonminimal Standard-Model Extension

open access: yes, 2017
In this paper, we derive the general leading-order classical Lagrangian covering all fermion operators of the nonminimal Standard-Model Extension (SME).
Reis, J. A. A. S., Schreck, M.
core   +1 more source

Corrections to Laser Electron Thomson Scattering [PDF]

open access: yes, 2013
We discuss classical and quantum corrections to Thomson scattering between an electron and a laser. For radiation reaction, nonlinear, and quantum effects we identify characteristic dimensionless parameters in terms of which we determine the leading ...
Heinzl, Thomas, Ilderton, Anton
core  

Twist deformations of Newtonian Schwarzschild-(Anti-)de Sitter classical system

open access: yes, 2019
In this article we provide three new twist-deformed Newtonian Schwarzschild-(Anti-)de Sitter models. They are defined on the Lie-algebraically as well as on the canonically noncommutative space-times respectively.
Daszkiewicz, Marcin
core   +1 more source

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