Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants

The finding, in one line

“A null result can be translated into a limit on the variation of a set of fundamental constants, that is usually reduced to alpha.”

Abstract (excerpt)

We consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variations in the fine-structure constant, alpha, in both the laboratory (through atomic clock measurements) and in astrophysical systems (e.g. through measurements of the 21 cm transitions). A null result can be translated into a limit on the variation of a set of fundamental constants, that is usually reduced to alpha. However, in specific models, particularly unification models, changes in alpha are always accomp

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