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arXiv · 0908.2949

Brane-world cosmology and varying $G$

Leonardo Amarilla·Hector Vucetich
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Abstract

We consider a brane-world cosmological model coupled to a bulk scalar field. Since the brane tension turns out to be proportional to Newton coupling $G$, in such a model a time variation of $G$ naturally occurs. By resorting to available bounds on the variation of $G$, the parameters of the model are constrained. The constraints coming from nucleosynthesis and CMB result to be the severest ones.

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Leonardo Amarilla, Hector Vucetich. 2009-08-20. Brane-world cosmology and varying $G$. https://doi.org/10.1142/s0217751x10049700

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