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Addressing H0 tension by means of VCDM

Authors :
Antonio De Felice
Masroor C. Pookkillath
Shinji Mukohyama
Source :
Physics Letters B, Vol 816, Iss, Pp 136201-(2021)
Publication Year :
2021
Publisher :
Elsevier BV, 2021.

Abstract

In this letter we propose a reduction of the $H_0$ tension puzzle by means of a theory of minimally modified gravity which is dubbed VCDM. After confronting the theory with the experiments, we find that the data allow for a low-redshift transition in the expansion history of the universe at either $z\simeq 0.3 $ or $z \simeq 1.8\,$, corresponding to one of the two local minima of the total $\chi^2$. From the bestfit values the total fitness parameter is improved by $\Delta \chi^2 \simeq 12$, for the data set considered. We then infer the local Hubble expansion rate today within this theory by means of low redshift Pantheon data. The resulting local Hubble expansion rate today is $H^{\rm{loc}}_0=73.6\pm1.4$. We find the tension is reduced within the VCDM theory.<br />Comment: 9 pages, 4 figures; minor revision in v5

Details

Language :
English
ISSN :
03702693
Volume :
816
Database :
OpenAIRE
Journal :
Physics Letters B
Accession number :
edsair.doi.dedup.....3d846868df4827ccb94cb4fa99af15d3