On the Possibility of Faster-Than-Light Motions in Nonlinear Electrodynamics

On the Electrodynamics with Faster-Than-Light Motion

The version of electrodynamics is constructed in which faster-than-light motions of fields and particles with real masses are possible. Transformational properties of 3-velocity, momentum, energy and electromagnetic field are presented in addition to the paper physics/0405085.

On the Faster-Than-Light Motions in Electrodynamics

A variant of electrodynamics is constructed in which faster-than-light motions are possible.

On the theoretical possibility of the electromagnetic scalar potential wave spreading with an arbitrary velocity in vacuum

In this work we revisit the process of constructing wave equations for the scalar and vector potentials of an electromagnetic field, and show that a wave equation with an arbitrary velocity (including a velocity higher than the velocity of light in vacuum) for the scalar potential exists in the framework of classical electrodynamics. Some consequences of this fact are considered. It is shown (in the Appendix) at what point this work differs from works concerned of the problem of the gauge invariance in the classical electrodynamics.

Covariant formulation of electrodynamics in isotropic media

The equations of electromagnetic fields in a medium is usually written in the rest frame of the medium. We outline a method of generalizing the discussion to arbitrary inertial frames. In the discussion, we also include the possibility that the medium is optically active, a possibility that is often overlooked in discussions of electromagnetic fields in a medium.

麦克斯韦电动力学的若干非线性扩展

On some nonlinear extensions to Maxwell's electrodynamics

本文在本科层面重新审视相关非线性电动力学理论，探究其解决带电粒子经典自能问题的能力，以应对经典带电粒子模型的自能发散等难题。

On the existence of pure, broadband toroidal sources in electrodynamics

Multipoles are paramount for describing electromagnetic fields in many areas of nanoscale optics, playing an essential role for the design of devices in plasmonics and all-dielectric nanophotonics. Challenging the traditional division into electric and magnetic moments, toroidal moments have been proposed as a physically distinct family of multipoles with significant contributions to the properties of matter. However, the apparent impossibility of separately measuring their response sheds doubt on their true physical significance. Here, we confirm the possibility of selectively exciting toroid…