The conflict between realism and the scalar potential in electrodynamics

Details The conflict between realism and the scalar potential in electrodynamics The conflict between realism and the scalar potential in electrodynamics

2009-04-24

arxiv.org/abs/0904.3867v1

Physics

Mathematical Physics

31 pages. Presented at various conferences. To be submmited to journal shortly,

Scientific paper

Within no inertial frame can stationary charge exist. All charge, wherever it exists, experiences perpetual interaction with charge elsewhere and so can only exist as non-trivial current. It follows that the notion of the electrostatic scalar potential is a pragmatic idealization - it is not fundamental and is useful simply because, in many practical circumstances, the time scales of interest are sufficiently small that charges can be considered stationary in appropriately chosen inertial frames. In this paper, we take the view that the subsuming of the electrostatic scalar potential within classical electrodynamics raises issues of fundamental principle and consider the question of whether it is possible to have a relativistic electrodynamics sans the electrostatic scalar potential - that is, expressed purely in terms of some form of relativistic magnetic potential. Surprisingly, we find that such a thing can be realized in a remarkably simple way - and which is cost-free for ordinary applications of electrodynamics. But the overall formalism has fundamental ramifications for our deeper understanding of electrodynamics - for example, a new relativistic symmetry arises which, naturally interpreted, implies that the Lorentz force must be considered as a local-action contact force in which energy-momentum is locally conserved through the medium of an uncharged massive vector particle.

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