量化ACT、SPT与Planck之间的全局参数张力
宇宙学与河外天体物理
2021-04-20 v4
摘要
在协调宇宙学模型内，使用可疑性统计量（suspiciousness statistic）量化了阿塔卡马宇宙学望远镜2020（ACT）与Planck 2018数据之间的整体宇宙学参数张力为2.6。在ACT与南极望远镜（SPT）之间，我们发现张力为2.4，而在ACT与Planck+SPT组合之间为2.8。尽管尚不清楚该张力是由统计涨落、系统效应还是新物理引起的，但在CDM标准宇宙模型背景下组合这些宇宙微波背景数据集时应谨慎行事。
引用
@article{arxiv.2007.08496,
title = {Quantifying the global parameter tensions between ACT, SPT and Planck},
author = {Will Handley and Pablo Lemos},
journal= {arXiv preprint arXiv:2007.08496},
year = {2021}
}
备注
6 Pages, 1 figure, 1 table. Prepared for submission to PRL. v2: updated pre-submission with additional analysis and makes clearer the relationship with the ACT DR4 analysis. v3. Additional analysis added for exact suspiciousness calculation. v4. Updates to text and references post PRD review