论文标题
使用普朗克和SPTPOL数据探索对哈勃张力的早期深色能源解决方案
Exploring Early Dark Energy solution to the Hubble tension with Planck and SPTPol data
论文作者
论文摘要
解决长期存在的哈勃张力的一个有前途的想法是假设在预聚合宇宙中，新的副尺寸的类似黑色能源的组成部分，传统上被称为早期的暗能量（EDE）。但是，如参考文献所示。 \ cite {Hill：2020OSR，Ivanov：2020ril}宇宙微波背景（CMB）和大规模结构（LSS）数据对此提案施加了严格的约束。在这里，考虑到大角度尺度上的Planck CMB温度各向异性数据以及SPTPOL极化和透镜测量值，我们重新审视了这些强界。如参考文献中所提倡的。 \ cite {chudaykin：2020ACU}，这种组合的数据方法预测了CMB镜头效应与$λ$ CDM期望一致，并允许人们有效探测大和小角度尺度。在EDE分析中，将Planck和SPTPOL CMB数据与全形的老板可能性和来自光度LSS调查的信息相结合，我们发现了Hubble常数$ H_0 = 69.79 \ pM0.99 \，{\ rm km km km km km \，s^{ - 1} mpc^{ - 1} mpc^{ - 1} $ fr EDE} <0.094 \，（2σ）$。这些界限在没有包括$ H_0 $（SH0ES）的本地距离梯子测量的情况下减轻了Hubble张力至$2.5σ$级别。进一步包括SH0ES数据，我们获得了$ H_0 = 71.81 \ pM1.19 \，{\ rm km \，s^{ - 1} mpc^{ - 1}} $和$ f _ {\ rm eDe} = 0.088 \ pm0.034 $ fustalance fictance fictance conferance fictance fictancesssssssessessessessessessesses。我们还发现，$ H_0 $的较高值不会显着恶化与LSS数据的拟合。总体而言，即使考虑到宇宙参数空间中不受约束的方向，EDE方案（尽管很弱）也比$λ$ CDM受到青睐。我们得出的结论是，大规模的Planck温度和SPTPOL极化测量以及LSS数据并不排除EDE模型作为哈勃张力的分辨率。本文强调了CMB镜头效应对强大约束对EDE方案的重要性。
A promising idea to resolve the long standing Hubble tension is to postulate a new subdominant dark-energy-like component in the pre-recombination Universe which is traditionally termed as the Early Dark Energy (EDE). However, as shown in Refs. \cite{Hill:2020osr,Ivanov:2020ril} the cosmic microwave background (CMB) and large-scale structure (LSS) data impose tight constraints on this proposal. Here, we revisit these strong bounds considering the Planck CMB temperature anisotropy data at large angular scales and the SPTPol polarization and lensing measurements. As advocated in Ref. \cite{Chudaykin:2020acu}, this combined data approach predicts the CMB lensing effect consistent with the $Λ$CDM expectation and allows one to efficiently probe both large and small angular scales. Combining Planck and SPTPol CMB data with the full-shape BOSS likelihood and information from photometric LSS surveys in the EDE analysis we found for the Hubble constant $H_0=69.79\pm0.99\,{\rm km\,s^{-1}Mpc^{-1}}$ and for the EDE fraction $f_{\rm EDE}<0.094\,(2σ)$. These bounds obtained without including a local distance ladder measurement of $H_0$ (SH0ES) alleviate the Hubble tension to a $2.5σ$ level. Including further the SH0ES data we obtain $H_0=71.81\pm1.19\,{\rm km\,s^{-1}Mpc^{-1}}$ and $f_{\rm EDE}=0.088\pm0.034$ in full accordance with SH0ES. We also found that a higher value of $H_0$ does not significantly deteriorate the fit to the LSS data. Overall, the EDE scenario is (though weakly) favoured over $Λ$CDM even after accounting for unconstrained directions in the cosmological parameter space. We conclude that the large-scale Planck temperature and SPTPol polarization measurements along with LSS data do not rule out the EDE model as a resolution of the Hubble tension. This paper underlines the importance of the CMB lensing effect for robust constraints on the EDE scenario.
