Can the Lorenz-gauge potentials be considered physical quantities?

Jose A. Heras; Guillermo Fernandez-Anaya

doi:10.1088/0143-0807/31/2/008

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arXiv · 1012.1063

Can the Lorenz-gauge potentials be considered physical quantities?

Jose A. Heras·Guillermo Fernandez-Anaya

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Abstract

Two results support the idea that the scalar and vector potentials in the Lorenz gauge can be considered to be physical quantities: (i) they separately satisfy the properties of causality and propagation at the speed of light and not imply spurious terms and (ii) they can naturally be written in a manifestly covariant form. In this paper we introduce expressions for the Lorenz-gauge potentials at the present time in terms of electric and magnetic fields at the retarded time. These expressions provide a third result in favor of a physical interpretation of the Lorenz-gauge potentials: (iii) they can be regarded as causal effects of the observed electric and magnetic fields.

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Jose A. Heras, Guillermo Fernandez-Anaya. 2010-12-06. Can the Lorenz-gauge potentials be considered physical quantities?. https://doi.org/10.1088/0143-0807%2F31%2F2%2F008

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