论文标题
是否有早期的宇宙解决方案来解决哈勃张力？
Is there an early Universe solution to Hubble tension?
论文作者
论文摘要
我们考虑一个低红移$（z <0.7）$宇宙学数据集，该数据集包括兆甲板，宇宙天元器，IA SNE型和BAO，我们根据它们的红移来bin。对于每个垃圾箱，我们通过直接拟合到Flat $λ$ CDM型号来读取$ H_0 $的值。这样做，我们发现$ h_0 $以红移下降，允许一个人与\ textit {non-Zero}斜坡统计显着性$ 2.1 \，σ$拟合一条线。我们的分析取决于使用宇宙天元器来打破BAO数据中的退化性，随着数据的改善，必须重新访问此功能。然而，我们的结果为H0licow协作报告的下降趋势提供了第一个独立的指示。如果得到证实，对哈勃紧张的早期宇宙解决方案将难以解释这一趋势。
We consider a low redshift $(z<0.7)$ cosmological dataset comprising megamasers, cosmic chronometers, type Ia SNe and BAO, which we bin according to their redshift. For each bin, we read the value of $H_0$ by fitting directly to the flat $Λ$CDM model. Doing so, we find that $H_0$ descends with redshift, allowing one to fit a line with a \textit{non-zero} slope of statistical significance $2.1 \, σ$. Our analysis rests on the use of cosmic chronometers to break a degeneracy in BAO data and it will be imperative to revisit this feature as data improves. Nevertheless, our results provide the first independent indication of the descending trend reported by the H0LiCOW collaboration. If substantiated going forward, early Universe solutions to the Hubble tension will struggle explaining this trend.
