论文标题
$ H_0 $ EX MACHINA：真空变态，超出$ H_0 $
$H_0$ Ex Machina: Vacuum Metamorphosis and Beyond $H_0$
论文作者
论文摘要
我们不解决与一致性宇宙学的紧张关系；我们在模型中确实从CMB+BAO+SN数据中获得了$ H_0 \约74 \，$ km/s/mpc，但这不是重点。不应孤立地观察通过各种天体物理探针获得的哈勃恒定值的差异。尽管人们可以通过早期过渡或延迟过渡来解决一些差异，但这些差异会引入其他变化。我们提倡采用多种宇宙数据，而不是专注于一个数字，$ h_0 $。真空变态是由量子引力效应和\ lCDM相同数量的参数数量的较晚时间过渡，可以成功地从宇宙微波背景数据中获得高$ H_0 $值，但与多个距离探针结合时会失败。我们还探讨了空间曲率的影响，以及对宇宙扩张和生长的结合分析。
We do not solve tensions with concordance cosmology; we do obtain $H_0\approx 74\,$km/s/Mpc from CMB+BAO+SN data in our model, but that is not the point. Discrepancies in Hubble constant values obtained by various astrophysical probes should not be viewed in isolation. While one can resolve at least some of the differences through either an early time transition or late time transition in the expansion rate, these introduce other changes. We advocate a holistic approach, using a wide variety of cosmic data, rather than focusing on one number, $H_0$. Vacuum metamorphosis, a late time transition physically motivated by quantum gravitational effects and with the same number of parameters as \lcdm, can successfully give a high $H_0$ value from cosmic microwave background data but fails when combined with multiple distance probes. We also explore the influence of spatial curvature, and of a conjoined analysis of cosmic expansion and growth.
