Brans-Dicke-like field for co-varying $G$ and $c$: observational constraints

J. Bezerra-Sobrinho, R. R. Cuzinatto, L. G. Medeiros +1

Ref. [Symmetry 15 (2023) 709] introduced a Brans-Dicke-like framework wherein the scalar field $\varphi$ is composed of both $G$ and $c$ which, for this reason, co-vary according to $c^{…