Colloque national Action Dark Energy 2024 - 8ème édition

Update on the $\omega_m$ tension.

28 oct. 2024, 17:40

20m

Amphithéâtre Hermite (Institut Henri Poincaré)

Présentations

Orateur

ALAIN BLANCHARD (IRAP , OMP)

Description

The tension on the Hubble constant can be reformulated as a tension on the matter density parameter $\omega_M$. This has the advantage that $\omega_M$ is more directly connected to the CMB-derived parameters, unlike the Huble constant. With the recent DESI measurement, the tensoin is raised up to over6 $\sigma$, stronger than the tension on the Hubble constant.