Cosmic Constraint on Ricci Dark Energy Model

Details Cosmic Constraint on Ricci Dark Energy Model Cosmic Constraint on Ricci Dark Energy Model

2008-10-26

arxiv.org/abs/0810.4730v2

Mod. Phys. Lett. A, Vol. 24, No. 17 (2009) pp. 1355-1360

Astronomy and Astrophysics

Astrophysics

4 Pages, 1 Figure. match the published version

Scientific paper

In this paper, a holographic dark energy model, dubbed Ricci dark energy, is confronted with cosmological observational data from type Ia supernovae (SN Ia), baryon acoustic oscillations (BAO) and cosmic microwave background (CMB). By using maximum likelihood method, it is found out that Ricci dark energy model is a viable candidate of dark energy model with the best fit parameters: $\Omega_{m0}=0.34\pm 0.04$, $\alpha=0.38\pm 0.03$ with $1\sigma$ error. Here, $\alpha$ is a dimensionless parameter related with Ricci dark energy $\rho_{R}$ and Ricci scalar $R$, i.e., $\rho_{R}\propto \alpha R$.

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