The Hubble constant tension with next-generation galaxy surveys,Journal of Cosmology and Astroparticle Physics

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The Hubble constant tension with next-generation galaxy surveys
Journal of Cosmology and Astroparticle Physics ( IF 5.3 ) Pub Date : 2020-05-29 , DOI: 10.1088/1475-7516/2020/05/053
Carlos A.P. Bengaly _{1,

2} , Chris Clarkson _{1,

3,

4} , Roy Maartens _{1,

5}

Affiliation

The rate at which the universe is expanding today is a fundamental parameter in cosmology which governs our understanding of structure formation and dark energy. However, current measurements of the Hubble constant, $H_0$, show a significant tension ($\sim 4-6\sigma$) between early- and late-Universe observations. There are ongoing efforts to check the diverse observational results and also to investigate possible theoretical ways to resolve the tension~-- which could point to radical extensions of the standard model. Here we demonstrate the potential of next-generation spectroscopic galaxy surveys to shed light on the Hubble constant tension. Surveys such as those with Euclid and the Square Kilometre Array (SKA) are expected to reach sub-percent precision on Baryon Acoustic Oscillation (BAO) measurements of the Hubble parameter, with a combined redshift coverage of $0.1

中文翻译：

哈勃持续紧张与下一代星系调查

今天宇宙膨胀的速度是宇宙学中的一个基本参数，它支配着我们对结构形成和暗能量的理解。然而，目前对哈勃常数 $H_0$ 的测量表明，早期和晚期宇宙观测之间存在显着的张力（$\sim 4-6\sigma$）。目前正在努力检查各种观察结果，并研究解决张力的可能理论方法——这可能指向标准模型的根本扩展。在这里，我们展示了下一代光谱星系调查揭示哈勃恒张力的潜力。诸如欧几里得和平方千米阵列 (SKA) 之类的调查预计将在哈勃参数的重子声学振荡 (BAO) 测量中达到亚百分比的精度，

更新日期：2020-05-29

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