Ricci暗能量模型的宇宙约束
Cosmic Constraint on Ricci Dark Energy Model
摘要：
利用Ia型超新星（SNIa）、重子声学振荡（BAO）和宇宙微波背景（CMB）的观测数据，对全息暗能量模型（Ricci暗能量）进行了研究.利用最大似然方法，发现Ricci暗能量模型是暗能量模型的一个可行候选，其最佳拟合参数为：$Ω_{m0}=0.34\pm 0.04$，$α=0.38\pm 0.03$，带$1σ$误差.这里，$α$是与里奇暗能量$ρ_{R}$和里奇标量$R$相关的无量纲参数，即，$ρ_{R}\propto αR$。
英文摘要：
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: $Ω_{m0}=0.34\pm 0.04$, $α=0.38\pm 0.03$ with $1σ$ error. Here, $α$ is a dimensionless parameter related with Ricci dark energy $ρ_{R}$ and Ricci scalar $R$, i.e., $ρ_{R}\propto αR$.
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