Work

H0 tension without CMB data: Beyond the ΛCDM

Year: 2021

Type: article

Abstract: We investigate the ${H}_{0}$ tension in a range of extended model frameworks beyond the standard $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ without the data from the cosmic microwave background (CMB). Specifically, we adopt the data from baryon acoustic oscillations, big bang nucleosynthesis, and type Ia supernovae as indirect measurements of ${H}_{0}$ to study the tension. We show that the estimated value of ${H}_{0}$ from indirect measurements is overall lower than that from direct local ones regardless of the data sets and a range of extended models to be analyzed, which indicates that, although the significance of the tension varies depending on models, the ${H}_{0}$ tension persists in a broad framework beyond the standard $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ model even without CMB data.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.104.023523

Authors: Fumiya Okamatsu, Toyokazu Sekiguchi, Tomo Takahashi

Institutions: Saga University, High Energy Accelerator Research Organization, Institute of Particle and Nuclear Studies

Language: Latvian

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science