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- W4226154602 endingPage "640" @default.
- W4226154602 startingPage "633" @default.
- W4226154602 abstract "A minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimensional Riemannian manifold where a covariantly conserved stress-energy tensor acts as source of the field equations which are formally the same as Einstein field equations, but where the couplings ${ G, c,Lambda }$ are allowed to vary simultaneously. The minimal CPC model takes $Lambda$ as a genuine constant while $c$ and $G$ vary in an entangled way that is consistent with Bianchi identity and the aforementioned assumptions. The model is constrained using the most recent galaxy cluster gas mass fraction observational data. Our result indicates that the functions $c(z)$ and $Gleft(zright)=G_{0}left(c/c_{0}right)^{4}$ are compatible with constant couplings for the three different parameterizations of $c=c(z)$ adopted here." @default.
- W4226154602 created "2022-05-05" @default.
- W4226154602 creator A5007276781 @default.
- W4226154602 creator A5011298886 @default.
- W4226154602 creator A5013957671 @default.
- W4226154602 date "2022-11-11" @default.
- W4226154602 modified "2023-10-15" @default.
- W4226154602 title "Observational constraints on varying fundamental constants in a minimal CPC model" @default.
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