论文标题
通货膨胀大战：新希望
Inflation Wars: A New Hope
论文作者
论文摘要
我们探索了一类原始功率谱，可以很好地符合宇宙微波背景中观察到的各向异性，并预测哈勃参数的值与本地测量$ h_0 = 74 $ km/s/s/mpc一致。这类原始功率谱包括最佳拟合功率定律原始功率谱与源自修改后的理查德·卢西（Richardson-Lucy Deonvolution）的原始功率光谱之间的连续变形，用于$ c_ \ ell $ c_ \ ell $ c_ \ ell $ c_ \ ell fit fit Power power Lawiagial Power lagordial Pericordial Primordial Primordial Primordial Primordial Primordial Prientsprum。我们发现，功率定律与修改的Richardson-Lucy Power Spectra之间的线性插值比$δ\ log \ log \ Mathcal {l} = 2.5 $比最佳拟合$λ$ CDM更适合Planck数据。实际上，这类原始功率光谱的变形提供了一个与哈勃参数相关的新维度。此相关性导致$ H_0 $的最佳拟合值可以移动，并且不确定性扩展到$ H_0 = 70.2 \ pm 1.2 $ km/s/s/mpc。当考虑Planck数据集与CepheID $ H_0 $测量相结合时，最佳拟合$ H_0 $变为$ H_0 = 71.8 \ PM 0.9 $ km/s/s/mpc。我们还计算了$ \ log k = 5.7 $的贝叶斯因子，以变形模型。
We explore a class of primordial power spectra that can fit the observed anisotropies in the cosmic microwave background well and that predicts a value for the Hubble parameter consistent with the local measurement of $H_0 = 74$ km/s/Mpc. This class of primordial power spectrum consists of a continuous deformation between the best-fit power law primordial power spectrum and the primordial power spectrum derived from the modified Richardson-Lucy deconvolution algorithm applied to the $C_\ell$s of best-fit power law primordial power spectrum. We find that linear interpolation half-way between the power law and modified Richardson-Lucy power spectra fits the Planck data better than the best-fit $Λ$CDM by $Δ\log\mathcal{L} = 2.5$. In effect, this class of deformations of the primordial power spectra offer a new dimension which is correlated with the Hubble parameter. This correlation causes the best-fit value for $H_0$ to shift and the uncertainty to expand to $H_0 = 70.2 \pm 1.2$ km/s/Mpc. When considering the Planck dataset combined with the Cepheid $H_0$ measurement, the best-fit $H_0$ becomes $H_0 = 71.8 \pm 0.9$ km/s/Mpc. We also compute a Bayes factor of $\log K = 5.7$ in favor of the deformation model.
