论文标题
使用ACT，SPT和二头肌/Keck对新的早期暗能量的扎根观点
A grounded perspective on New Early Dark Energy using ACT, SPT, and BICEP/Keck
论文作者
论文摘要
我们进一步研究了新的早期黑暗能源模型（NEDE）解决宇宙微波背景（CMB）之间的当前张力和$ H_0 $的局部测量以及对通货膨胀的后果之间的能力。我们进行了新的贝叶斯分析，包括基于地面的CMB望远镜的当前数据集Atacama Cosmology望远镜（ACT），South Pole望远镜（SPT）和二头肌/Keck望远镜，采用了来自S $ H_0 $ $ H_0 $的本地测量结果。使用$ H_0 $上的S $ h_0 $ es先验，与Baryonic声学振荡（BAO），Pantheon，Planck和Act的合并分析改善了$Δχ^2 = -15.9 $相对于$λ$ CDM，$ favors $ favors $ favers $ favers $ fiavers $ f neede $ f________。并给出$ H_0 = 72.09 $ km/s/mpc（平均$ 71.48 _ { - 0.81}^{+0.79} $，$ 68 \％$ c.l.）的哈勃常数= 72.09 $ km/s/mpc的最佳拟合值。 A similar analysis using SPT instead of ACT yields consistent results with a $Δχ^2 = - 23.1$ over $Λ$CDM, a preference for non-zero $f_{\rm NEDE}$ of $4.7σ$ and a best-fit value of $H_0=71.77$ km/s/Mpc (mean $ 71.43 _ { - 0.84}^{+0.84} $，$ 68 \％$ c.l.）。我们还提供了来自NEDE的通货膨胀参数$ r $和$ n_s $的限制，包括二头肌/凯克2018数据，并表明张张量标准比的允许上值与$λ$ cdm的绑定一致，但与最初发现的蓝色标量型模型更具蓝色的curvians curvatsy是curvat的curvaton nour curvaton is parton now the parton sath of staton sater and parton now the staton是curvat的curvaton，这也是如此。
We examine further the ability of the New Early Dark Energy model (NEDE) to resolve the current tension between the Cosmic Microwave Background (CMB) and local measurements of $H_0$ and the consequences for inflation. We perform new Bayesian analyses, including the current datasets from the ground-based CMB telescopes Atacama Cosmology Telescope (ACT), the South Pole Telescope (SPT), and the BICEP/Keck telescopes, employing an updated likelihood for the local measurements coming from the S$H_0$ES collaboration. Using the S$H_0$ES prior on $H_0$, the combined analysis with Baryonic Acoustic Oscillations (BAO), Pantheon, Planck and ACT improves the best-fit by $Δχ^2 = -15.9$ with respect to $Λ$CDM, favors a non-zero fractional contribution of NEDE, $f_{\rm NEDE} > 0$, by $4.8σ$, and gives a best-fit value for the Hubble constant of $H_0 = 72.09$ km/s/Mpc (mean $71.48_{-0.81}^{+0.79}$ with $68\%$ C.L.). A similar analysis using SPT instead of ACT yields consistent results with a $Δχ^2 = - 23.1$ over $Λ$CDM, a preference for non-zero $f_{\rm NEDE}$ of $4.7σ$ and a best-fit value of $H_0=71.77$ km/s/Mpc (mean $71.43_{-0.84}^{+0.84}$ with $68\%$ C.L.). We also provide the constraints on the inflation parameters $r$ and $n_s$ coming from NEDE, including the BICEP/Keck 2018 data, and show that the allowed upper value on the tensor-scalar ratio is consistent with the $Λ$CDM bound, but, as also originally found, with a more blue scalar spectrum implying that the simplest curvaton model is now favored over the Starobinsky inflation model.
