Vacuum phase transition solves the H 0 tension
Vacuum phase transition solves the H 0 tension
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DOI：
10.1103/physrevd.97.043528
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发表时间：
2017-10
影响因子：
5
通讯作者：
E. D. Valentino;E. Linder;A. Melchiorri
中科院分区：
文献类型：
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作者：
E. D. Valentino;E. Linder;A. Melchiorri
在普朗克宇宙微波背景数据和更直接的哈勃常数测量数据不受系统偏差影响的情况下，在$\Lambda$CDM宇宙学常数和冷暗物质宇宙学模型中解释的哈勃常数H 0的值处于$\sim 3.3 \sigma$张力中。我们发现，帕克真空变态模型，物理上由量子引力效应驱动，具有与$\Lambda$CDM相同数量的参数，可以消除$H_0$张力，并可以提供更好的拟合数据（高达$\Delta\chi^2 =-7.5 $）。它还改善了与弱透镜数据和高红移莱曼α森林数据的紧张关系。我们分别考虑了引力透镜振幅的尺度相关缩放，例如由修正引力、中微子质量或冷暗能量提供的，其动机是低和高CMB多极的宇宙学参数估计略有不同。我们发现，没有这样的规模依赖是首选的。
Taking the Planck cosmic microwave background data and the more direct Hubble constant measurement data as unaffected by systematic offsets, the values of the Hubble constant $H_0$ interpreted within the $\Lambda$CDM cosmological constant and cold dark matter cosmological model are in $\sim 3.3 \sigma$ tension. We show that the Parker vacuum metamorphosis model, physically motivated by quantum gravitational effects and with the same number of parameters as $\Lambda$CDM, can remove the $H_0$ tension, and can give an improved fit to data (up to $\Delta\chi^2=-7.5$). It also ameliorates tensions with weak lensing data and the high redshift Lyman alpha forest data. We separately consider a scale dependent scaling of the gravitational lensing amplitude, such as provided by modified gravity, neutrino mass, or cold dark energy, motivated by the somewhat different cosmological parameter estimates for low and high CMB multipoles. We find that no such scale dependence is preferred.