Dirac cosmology and the acceleration of the contemporary universe
Abstract
A model is suggested to unify the Einstein general relativity and Dirac cosmology. There is one adjusted parameter b_{2} in our model. After adjusting the parameter b_{2} in the model by using the supernova data, we have calculated the gravitational constant \skew3\bar G and the physical quantities a(t), q(t) and ρ_{r}(t)/ρ_{b}(t) by using the present day quantities as the initial conditions and found that the equation of state parameter w_{θ} equals 0.83, the ratio of the density of the addition creation Ω_{Λ} = 0.8 and the ratio of the density of the matter including multiplication creation, radiation and normal matter Ω_{m} = 0.2 at present. The results are selfconsistent and in good agreement with present knowledge in cosmology. These results suggest that the addition creation and multiplication creation in Dirac cosmology play the role of the dark energy and dark matter, respectively. We have shown that our theory is consistent with solar system tests.
 Publication:

Classical and Quantum Gravity
 Pub Date:
 June 2006
 DOI:
 10.1088/02649381/23/11/003
 arXiv:
 arXiv:grqc/0508030
 Bibcode:
 2006CQGra..23.3707S
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 13 pages, 8 figures