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Dirac Cosmology and the Acceleration of the Contemporary Universe

Cheng-Gang Shao·Jianyong Shen·Bin Wang·Ru-Keng Su
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Abstract

A model is suggested to unify the Einstein GR 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 $\bar G$ and the physical quantities of $a(t)$, $q(t)$ 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 to -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 self-consistent 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.

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Cheng-Gang Shao, Jianyong Shen, Bin Wang, Ru-Keng Su. 2005-08-09. Dirac Cosmology and the Acceleration of the Contemporary Universe. https://doi.org/10.1088/0264-9381%2F23%2F11%2F003

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