Variability of fundamental constants

Abstract

If the fine structure constant is not really constant, is this due to a variation of $e$, $\hslash$, or $c$? It is argued that the only reasonable conclusion is a variable speed of light.

preliminary draft, comments welcome

Cited by in corpus (3)

• To consider the electromagnetic field as fundamental, and the metric only as a subsidiary field
• Dimensions and Units in Electrodynamics
• Possible variations of the fine structure constant $\alpha$ and their metrological significance