论文标题
测试具有高斯流程的万神殿和SDSS/EBOSS BAO数据集的相互一致性
Testing the Mutual Consistency of the Pantheon and SDSS/eBOSS BAO Data Sets with Gaussian Processes
论文作者
论文摘要
我们通过使用高斯工艺回归以独立的模型方式来测试来自Eboss SDSS最终版本的Baryon声学振荡测量以及万神殿超新星汇编之间的相互一致性。我们还以独立模型的方式测试了他们的$λ$ CDM模型的关节一致性。我们还使用高斯流程回归来重建这两个数据集首选的扩展历史记录。尽管此方法认为超出$λ$ CDM的模型灵活性并没有明显的偏好，但我们能够生成许多重建的扩展历史，这些历史比最适合$λ$ CDM模型更适合数据。这些示例扩展历史可能会指向修改$λ$ CDM的道路。我们还约束参数$ω_k$和$ h_0r_d $均使用$λ$ CDM以及Gaussian流程回归。我们发现$ h_0r_d = 10030 \ pm 130 $ km/s，$ω_________________= 0.05 \ pm 0.10 $ for $λ$ cdm和$ h_0r_d = 10040 \ pm 140 $ km/s和$ω__________k= 0.02 \ pm 0.20 \ pm 0.20 $ 0.20 $ 0.20 $。
We test the mutual consistency between the baryon acoustic oscillation measurements from the eBOSS SDSS final release, as well as the Pantheon supernova compilation in a model independent fashion using Gaussian process regression. We also test their joint consistency with the $Λ$CDM model, also in a model independent fashion. We also use Gaussian process regression to reconstruct the expansion history that is preferred by these two datasets. While this methodology finds no significant preference for model flexibility beyond $Λ$CDM, we are able to generate a number of reconstructed expansion histories that fit the data better than the best-fit $Λ$CDM model. These example expansion histories may point the way towards modifications to $Λ$CDM. We also constrain the parameters $Ω_k$ and $H_0r_d$ both with $Λ$CDM and with Gaussian process regression. We find that $H_0r_d =10030 \pm 130$ km/s and $Ω_k = 0.05 \pm 0.10$ for $Λ$CDM and that $H_0r_d = 10040 \pm 140$ km/s and $Ω_k = 0.02 \pm 0.20$ for the Gaussian process case.
