期刊
GENERAL RELATIVITY AND GRAVITATION
卷 47, 期 2, 页码 -出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-015-1855-y
关键词
Fine structure constant variation; CMB temperature; Scalar-tensor theories; Non-minimal coupling; BSBM theory; Dilaton
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 phenomenological aspects of the parametrisations, they lead to the same physical observables. This is illustrated on the interpretation of observations of the cosmic microwave background.
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