论文标题
新兴黑能的证据
Evidence for Emergent Dark Energy
论文作者
论文摘要
我们介绍了一种新兴的暗能量模型的广义形式，该模型具有一个程度的深色能源部门，其灵活性可以包括$λ$ CDM模型以及Li＆Shafieloo（2019）提出的两个特殊限制。黑暗能源领域的免费参数，即$δ$，其值为$λ$的$ 0 $，而PEDE的情况为$ 1 $。将引入的参数形式拟合到Planck CMB数据，以及最新的$ H_0 $ $ H_0 $结果，来自局部观察到Cepheids和Supernovae，我们表明，与$λ$ CDM模型相关的$δ= 0 $将落在4 $σ$ proxpertive ofertive profuctive promitives promitive of the $δ$参数的后置限制中。此外，$ H_0 $张力将通过新兴的暗能量模型来缓解，该模型可以满足Planck CMB数据和本地$ H_0 $观测值与$δ{\ rm {dic}}} \，= \ \， - 2.88 $相比，与$ \ lcdm $ $ $ $ $ $ $ \ rm {\ rm {dic}} \，= \， - 2.88 $。
We introduce a generalised form of an emergent dark energy model with one degree of freedom for the dark energy sector that has the flexibility to include both $Λ$CDM model as well as the Phenomenologically Emergent Dark Energy (PEDE) model proposed by Li & Shafieloo (2019) as two of its special limits. The free parameter for the dark energy sector, namely $Δ$, has the value of $0$ for the case of the $Λ$ and $1$ for the case of PEDE. Fitting the introduced parametric form to Planck CMB data and most recent $H_0$ results from local observations of Cepheids and Supernovae, we show that the $Δ=0$ associated with the $Λ$CDM model would fall out of 4$σ$ confidence limits of the derived posterior of the $Δ$ parameter. Moreover, $H_0$ tensions will be alleviated with emergent dark energy model and this model can satisfy the combination of Planck CMB data and local $H_0$ observations with $Δ{\rm{DIC}}\,=\,-2.88$ compared with $\LCDM$ model.
