Can scale-dependent cosmology alleviate the H0 tension?

Scale-dependence is a common feature to all effective models of quantum gravity. In this paper, a cosmological model based on the scale-dependent scenario of gravity is presented. It is argued that such models, where the scale-dependence appears as a correction to the classical ΛCDM evolution, have...

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Published inJournal of cosmology and astroparticle physics Vol. 2021; no. 6
Main Authors Alvarez, Pedro D., Koch, Benjamin, Laporte, Cristobal, Rincón, Ángel
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2021
Subjects
Astronomical models
Cosmology
cosmology of theories beyond the SM
Criteria
gravity
modified gravity
Quantum gravity
Tension
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Summary:Scale-dependence is a common feature to all effective models of quantum gravity. In this paper, a cosmological model based on the scale-dependent scenario of gravity is presented. It is argued that such models, where the scale-dependence appears as a correction to the classical ΛCDM evolution, have the potential of addressing the tensions between early and late time measurements of H0. After defining criteria to parametrize this tension, we perform a numerical scan over the parameter space of the scale-dependent model, subject to these criteria. In this analysis, it is found that, indeed, the tension can be released.
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ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2021/06/019