Back to Search
Start Over
Addressing H0 tension by means of VCDM
- 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
- Subjects :
- High Energy Physics - Theory
Physics
Nuclear and High Energy Physics
Gravity (chemistry)
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Expansion rate
Reduction (recursion theory)
010308 nuclear & particles physics
Tension (physics)
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
General Relativity and Quantum Cosmology
lcsh:QC1-999
Redshift
Theoretical physics
High Energy Physics - Theory (hep-th)
0103 physical sciences
010306 general physics
lcsh:Physics
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 816
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi.dedup.....3d846868df4827ccb94cb4fa99af15d3