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H0 ex machina: Vacuum metamorphosis and beyond H0
Physics of the Dark Universe ( IF 5.5 ) Pub Date : 2020-10-08 , DOI: 10.1016/j.dark.2020.100733
Eleonora Di Valentino , Eric V. Linder , Alessandro Melchiorri

We do not solve tensions with concordance cosmology; we do obtain H074km/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, H0. Vacuum metamorphosis, a late time transition physically motivated by quantum gravitational effects and with the same number of parameters as ΛCDM, can successfully give a high H0 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.



中文翻译:

H0 前机械制造商:真空变态及其他 H0

我们不能用和谐宇宙学来解决紧张局势;我们获得H074在我们的模型中,从CMB + BAO + SN数据得出km / s / Mpc,但这不是重点。由各种天体物理学探测器获得的哈勃常数值的差异不应孤立地看待。尽管可以通过扩展速率的早期过渡或晚期过渡来解决至少一些差异,但这些差异会带来其他变化。我们提倡一种整体方法,使用各种各样的宇宙数据,而不是只关注一个数字,H0。真空变态,是由量子引力效应物理驱动的后期转变,具有与ΛCDM,可以成功给高 H0值从宇宙微波背景数据得出,但与多个测距探头组合使用时失败。我们还探索了空间曲率的影响,以及宇宙膨胀和增长的联合分析。

更新日期:2020-10-11
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