Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-06-14
Phys.Rev. D53 (1996) 6771-6783
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Latex file 29 pages with no figures. Please contact M.Salgado for figures. A more careful study of the model appears in gr-qc/
Scientific paper
10.1103/PhysRevD.53.6771
We consider the model involving the oscillation of the effective gravitational constant that has been put forward in an attempt to reconcile the observed periodicity in the galaxy number distribution with the standard cosmological models. This model involves a highly nonlinear dynamics which we analyze numerically. We carry out a detailed study of the bound that nucleosynthesis imposes on this model. The analysis shows that for any assumed value for $\Omega$ (the total energy density) one can fix the value of $\Omega_{\rm bar}$ (the baryonic energy density) in such a way as to accommodate the observational constraints coming from the $^4{\rm He}$ primordial abundance. In particular, if we impose the inflationary value $\Omega=1$ the resulting baryonic energy density turns out to be $\Omega_{\rm bar}\sim 0.021$. This result lies in the very narrow range $0.016 \leq \Omega_{\rm bar} \leq 0.026$ allowed by the observed values of the primordial abundances of the other light elements. The remaining fraction of $\Omega$ corresponds to dark matter represented by a scalar field.
Quevedo Hernando
Salgado Marcelo
Sudarsky Daniel
No associations
LandOfFree
Galactic periodicity and the oscillating G model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Galactic periodicity and the oscillating G model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galactic periodicity and the oscillating G model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-360348