To H0 or not to H0?

By G. Efstathiou. 2021

218 citations recorded by the source corpus.

This paper investigates whether changes to late time physics can resolve the ‘Hubble tension’. It is argued that many of the claims in the literature favouring such solutions are caused by a misunderstanding of how distance ladder measurements actually work and, in particular, by the inappropriate use of a distance ladder H0 prior. A dynamics-free inverse distance ladder shows that changes to late time physics are strongly constrained observationally and cannot resolve the discrepancy between the SH0ES data and the base ΛCDM cosmology inferred from Planck. We propose a statistically rigorous scheme to replace the use of H0 priors.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/0c101a9f87245d85e8f5dd2567cb0ce31080dca9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. A. Riess
2. V. Poulin
3. S. Vagnozzi
4. Tanvi Karwal
5. Tristan L. Smith
6. A. Filippenko
7. S. Jha
8. D. Scolnic

In Nuclear and High Energy Physics

1. A. Riess
2. Tanvi Karwal
3. V. Poulin
4. Tristan L. Smith
5. S. Jha
6. A. Filippenko
7. F. Cyr-Racine
8. D. Scolnic

Citations in the corpus

• Rock ‘n’ roll solutions to the Hubble tension (2019, methodology): “[151, 152], using a Gaussian prior on H0 can lead to inconsistencies when considering cosmological models that differ significantly from ΛCDM at late times.”
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team (2021, methodology): “19m m z 3 0 ln 1 1 2 18 A variation of the inverse approach is to predict MB and compare that with local hosts as suggested by Efstathiou (2021), an approach that is equivalent in principle but the dependence ofMB on the method of SN standardization makes it less widely applicable. derived from the…”
• The Ups and Downs of Early Dark Energy solutions to the Hubble tension: A review of models, hints and constraints circa 2023 (2023, background): “As a result, measurements of H(z) along with θs(z) significantly constrain late-universe solutions 4 [52, 54, 62].”
• A buyer’s guide to the Hubble constant (2021, unknown): “A second problem with the use of H0 priors has been discussed by Efstathiou (2021), who points out the difference between it and the actual data analysis performed by the SH0ES team, which is a calibration 15 In ΛCDM, this is parametrised by req, the size of modes crossing the horizon at…”