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Invariant decomposition of the retarded electromagnetic field.
Graells, J.; Martín, C.; Codina i Vidal, Josep Ma. (Josep Maria), 1927-
Universitat de Barcelona
The integral representation of the electromagnetic two-form, defined on Minkowski space-time, is studied from a new point of view. The aim of the paper is to obtain an invariant criteria in order to define the radiative field. This criteria generalizes the well-known structureless charge case. We begin with the curvature two-form, because its field equations incorporate the motion of the sources. The gauge theory methods (connection one-forms) are not suited because their field equations do not incorporate the motion of the sources. We obtain an integral solution of the Maxwell equations in the case of a flow of charges in irrotational motion. This solution induces us to propose a new method of solving the problem of the nature of the retarded radiative field. This method is based on a projection tensor operator which, being local, is suited to being implemented on general relativity. We propose the field equations for the pair {electromagnetic field, projection tensor J. These field equations are an algebraic differential first-order system of oneforms, which verifies automatically the integrability conditions.
2012-04-26
Electrodinàmica
Teoria de camps (Física)
Teoria electromagnètica
Electrodynamics
Field theory (Physics)
Electromagnetic theory
(c) American Institute of Physics, 1985
Article
American Institute of Physics
         

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