Observables in theories with a varying fine structure constant

Authors :: Olivier Minazzoli
Aurélien Hees
Julien Larena
Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS)
Université Nice Sophia Antipolis (... - 2019) (UNS)
COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur
Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Source :: General Relativity and Gravitation, General Relativity and Gravitation, Springer Verlag, 2015, ⟨10.1007/s10714-015-1855-y⟩
Publication Year :: 2015
Publisher :: Springer Science and Business Media LLC, 2015.
Abstract: We show how two seemingly different theories with a scalar multiplicative coupling to electrodynamics are actually two equivalent parametrisations of the same theory: despite some differences in the interpretation of some phenemenological aspects of the parametrisations, they lead to the same physical observables. This is illustrated on the interpretation of observations of the Cosmic Microwave Background.<br />14 pages, matched published version

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