论文标题
量化ACT,SPT和Planck之间的全局参数张力
Quantifying the global parameter tensions between ACT, SPT and Planck
论文作者
论文摘要
Atacama宇宙学望远镜2020(ACT)和Planck 2018数据中的整体宇宙学参数张力使用可疑性统计量为2.6 $σ$量化。在ACT和South Pole望远镜(SPT)之间,我们发现ACT和Planck+SPT之间的2.4 $σ$的张力为2.4 $σ$,合并的张力为2.8 $σ$。尽管尚不清楚张力是由统计波动,系统效应还是新物理学引起的,但应在将这些宇宙微波背景数据集组合在宇宙的$λ$ CDM标准模型的背景下,应谨慎行事。
The overall cosmological parameter tension between the Atacama Cosmology Telescope 2020 (ACT) and Planck 2018 data within the concordance cosmological model is quantified using the suspiciousness statistic to be 2.6$σ$. Between ACT and the South Pole Telescope (SPT) we find a tension of 2.4$σ$, and 2.8$σ$ between ACT and Planck+SPT combined. While it is unclear whether the tension is caused by statistical fluctuations, systematic effects or new physics, caution should be exercised in combining these cosmic microwave background datasets in the context of the $Λ$CDM standard model of the universe.