论文标题
通过VCDM来解决$ h_0 $张力
Addressing $H_0$ tension by means of VCDM
论文作者
论文摘要
在这封信中，我们建议通过称为VCDM的最小修饰的重力理论来减少$ H_0 $张力拼图。在与实验与理论面对面之后，我们发现数据允许在宇宙的扩展历史记录中进行低频过渡，$ z \ simeq 0.3 $或$ z \ simeq 1.8 \，$，对应于总$χ^2 $中的两个本地最小值之一。从BESTFIT值中，对于所考虑的数据集，总适应性参数改进了$Δχ^2 \ simeq 12 $。然后，我们通过低红移万神殿数据来推断该理论中的本地哈勃扩展率。今天由此产生的本地哈勃扩展率为$ h^{\ rm {loc}} _ 0 = 73.6 \ pm1.4 $。我们发现在VCDM理论中减少了张力。
In this letter we propose a reduction of the $H_0$ tension puzzle by means of a theory of minimally modified gravity which is dubbed VCDM. After confronting the theory with the experiments, we find that the data allow for a low-redshift transition in the expansion history of the universe at either $z\simeq 0.3 $ or $z \simeq 1.8\,$, corresponding to one of the two local minima of the total $χ^2$. From the bestfit values the total fitness parameter is improved by $Δχ^2 \simeq 12$, for the data set considered. We then infer the local Hubble expansion rate today within this theory by means of low redshift Pantheon data. The resulting local Hubble expansion rate today is $H^{\rm{loc}}_0=73.6\pm1.4$. We find the tension is reduced within the VCDM theory.
