论文标题
$ H_0 $作为通用FLRW诊断
$H_0$ as a Universal FLRW Diagnostic
论文作者
论文摘要
我们扭转了$ H_0 $张力的明显存在背后的逻辑，以设计宇宙学模型的诊断。基本思想是，从不同红移的观察值中推断出的$ h_0 $的非构造是对flrw范式内模型的零假设测试 - 如果$ h_0 $运行，则模型是错误的。根据观察数据的种类，最合适的诊断形式可能会有所不同。作为示例，我们提供了两个$ H_0 $诊断，这些诊断适用于两个不同的Bao可观察物。我们使用这些和相应的BAO数据来高斯重建$ H_0 $ in Flat $λ$ CDM的运行，并带有Planck值的模型参数。对于平面$λ$ CDM时，当可以忽略辐射贡献时，使用共同的距离数据，诊断是一个简单的高几幅功能。只需跟踪诊断的（潜在的各向异性）天空变化，也可以容纳可能与FLRW范式的较晚时间偏差。
We reverse the logic behind the apparent existence of $H_0$-tension, to design diagnostics for cosmological models. The basic idea is that the non-constancy of $H_0$ inferred from observations at different redshifts is a null hypothesis test for models within the FLRW paradigm -- if $H_0$ runs, the model is wrong. Depending on the kind of observational data, the most suitable form of the diagnostic can vary. As examples, we present two $H_0$ diagnostics that are adapted to two different BAO observables. We use these and the corresponding BAO data to Gaussian reconstruct the running of $H_0$ in flat $Λ$CDM with Planck values for the model parameters. For flat $Λ$CDM when the radiation contribution can be neglected, with comoving distance data, the diagnostic is a simple hypergeometric function. Possible late time deviations from the FLRW paradigm can also be accommodated, by simply keeping track of the (potentially anisotropic) sky variation of the diagnostic.
