Non-minimal coupling and the H0 and BAO tensions
20.02.2026 11:50 – 12:50
The Hubble tension is one of the central topics of cosmology, possibly pointing to new physics beyond LambdaCDM. Furthermore, recent baryon acoustic oscillation (BAO), combined with type Ia supernova, observation unveils a new “tension” indicating possible gaps in our understanding of the recent expansion history of our Universe. One way of explaining the Hubble tension is to introduce new physics in the early Universe during recombination while the BAO “tension” might be explained by evolving dark energy in the late Universe. I will present recent works that study the origin of the cosmological tensions by assuming either early- or late-Universe modification. Based on such analysis, I will discuss how a non-minimally coupled scalar field theory, dubbed thawing gravity, can unify the early- and late-Universe modifications and explain the cosmological tensions.
Lieu
Bâtiment: Ecole de Physique
EP234
Organisé par
Faculté des sciencesDépartement de physique théorique
Intervenant-e-s
Ye Gen, UNIGEentrée libre
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