Speaker
Yuejia Zhai
(University of Sheffield)
Description
Although ΛCDM has been a successful cosmological model, there is a 5σ tension between $H_0$ values inferred from the cosmic microwave background (CMB) data by Planck and those measured directly by SH0ES. Apart from the Hubble tension, debates also extend to tensions on other cosmological parameters. Many alternative models are proposed to reconcile these tensions in cosmology. I will focus on a cosmological model featuring an interaction between dark matter and dark energy, where dark energy has a constant equation of state w=-1. Although the interaction remains minimal, it is favoured by a combined analysis of Planck CMB and DESI Baryon Acoustic Oscillation (BAO).
Authors
Carsten van de Bruck
(University of Sheffield)
Edward Wilson-Ewing
(University of New Brunswick)
Eleonora Di Valentino
(University of Sheffield)
Marco de Cesare
(University of Naples "Federico II")
Yuejia Zhai
(University of Sheffield)
