Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2011-01-25
Int.J.Mod.Phys.A 26 (2011) 317-329
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
9 pages, 7 figures
Scientific paper
10.1142/S0217751X11051263
Inspired by holographic principle, we suggest that the density of dark energy is proportional to the spatial Ricci scalar curvature (SRDE). Such model is phenomenologically viable. The best fit values of its parameters at 68% confidence level are found to be: $\Omega_{\rm m0}=0.259\pm0.016$ and $\alpha=0.261\pm0.0122$, constrained from the Union+CFA3 sample of 397 SNIa and the BAO measurement. We find the equation of state of SRDE crosses -1 at $z\simeq-0.14$. The present values of the deceleration parameter $q(z)$ for SRDE is found to be $q_{z=0}\sim -0.85$. The phase transition from deceleration to acceleration of the Universe for SRDE occurs at the redshift $z_{q=0}\sim 0.4$. After studying on the perturbation of each component of the Universe, we show that the matter power spectra and cosmic microwave background temperature anisotropy is slightly affected by SRDE, compared with $\Lambda$CDM.
Wu Fei-Fei
Yang Rong-Jia
Zhu Zhi-Hong
No associations
LandOfFree
Spatial Ricci scalar dark energy 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 Spatial Ricci scalar dark energy model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial Ricci scalar dark energy model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-542563