Early dark energy does not restore cosmological concordance

2020/03/31 by J. Colin Hill, Evan McDonough, Michael W. Toomey +1 · 1 citation
Medicine · Physics and Astronomy · #Astrophysics #Concordance #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Energy (signal processing) #Internal medicine #Medicine #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.102.043507

published as Phys. Rev. D 102, 043507 (2020) · 40 pages, 24 figures. CLASS_EDE code publicly available at https://github.com/mwt5345/class_ede . MCMC chains are publicly available for download at https://users.flatironinstitute.org/~chill/H20_data/ . v3: minor bug fixed in BOSS likelihood; conclusions unchanged. Accepted for publication in Phys. Rev. D

arxiv created 2020/07/15 · openalex publication_date 2020/08/05 · arxiv updated 2020/08/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

The authors provide a thorough study of a popular scenario (early dark energy EDE) to alleviate the tension in the measurements of the Hubble constant H₀, which either rely on early Universe probes and the cosmological standard model (\mathrm\ensuremathΛCDM) or on late Universe probes through direct, local distant measurements. The authors show that the inclusion of numerous large-scale structure data is in conflict with the parameter space that lifts the H₀ tension and severely limits the existence of EDE and, thus, makes it very unlikely to resolve the tension.

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