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arXiv 2006.12420astro-ph.COgr-qchep-ph
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基于大尺度结构数据全形分析的Hubble张力

The Hubble Tension in Light of the Full-Shape Analysis of Large-Scale Structure Data

Guido D'Amico, Leonardo Senatore, Pierre Zhang, Henry Zheng

摘要:

SH 0 ES合作项目中哈勃常数的直接晚期测量值与普朗克合作项目中基于$Λ$ CDM模型的早期宇宙测量值之间的不一致,至少在原则上可以用早期宇宙中的新物理来解释。最近,将大尺度结构的有效场论应用于SDSS/BOSS数据的功率谱的完整形状,揭示了一种新的、相当强大的方法来测量哈勃常数和其他来自大尺度结构巡天的宇宙学参数。有鉴于此,我们分析了早期宇宙物理学的两个模型,早期暗能量和摇滚乐,旨在显着改善哈勃紧张。在包括从普朗克,BAO和超新星测量的完整形状的信息,我们发现,这些模型引入的宇宙学参数的简并性很好地打破了数据,所以这两个模型并没有显着改善张力。

英文摘要:

The disagreement between direct late-time measurements of the Hubble constant from the SH0ES collaboration, and early-universe measurements based on the $Λ$CDM model from the Planck collaboration might, at least in principle, be explained by new physics in the early universe. Recently, the application of the Effective Field Theory of Large-Scale Structure to the full shape of the power spectrum of the SDSS/BOSS data has revealed a new, rather powerful, way to measure the Hubble constant and the other cosmological parameters from Large-Scale Structure surveys. In light of this, we analyze two models for early universe physics, Early Dark Energy and Rock 'n' Roll, that were designed to significantly ameliorate the Hubble tension. Upon including the information from the full shape to the Planck, BAO, and Supernovae measurements, we find that the degeneracies in the cosmological parameters that were introduced by these models are well broken by the data, so that these two models do not significantly ameliorate the tension.

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