On the causality of electrodynamics and the Aharonov-Bohm effect

Details On the causality of electrodynamics and the Aharonov-Bohm effect On the causality of electrodynamics and the Aharonov-Bohm effect

2011-11-24

arxiv.org/abs/1111.5755v1

Physics

Mathematical Physics

Scientific paper

This paper presents a \emph{non-instant field model} for electrodynamics that permits a causal explanation of the \emph{Aharonov-Bohm effect} and a \emph{covariant quantization} of the respective Maxwell equations via the \emph{Gupta-Bleuler method}. Our model satisfies the following \emph{correspondence principle}: if $A^\mu$, $\vE$, $\vB$ denote the four potential, the electric field and the magnetic field of the non-instant field model, then the respective classical quantities are $\A[A^\mu]$, $\A[\vE]$, $\A[\vB]$, where $\A$ is a covariant time averaging operator. Here $\A[A^\mu]$ is interpreted as the best possible measurement of the four potential $A^\mu$. Although the Lorentz condition is not satisfied for $A^\mu$, it is satisfied for $\A[A^\mu]$. The latter fact means that the Lorentz condition does not hold for the quantized field but for its expectation value (cf. \emph{Gupta-Bleuler method} of quantization). Finally, we derive the energy conservation law of our field model and show that the field energy is quantized.

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