[2024] CTPU-CGA Seminar

Is H0 a constant in Lambda-CDM cosmology

Name: Is H0 a constant in Lambda-CDM cosmology
Start: 2024-01-08T14:00:00+00:00
End: 2024-01-08T16:00:00+00:00
Location: No location set

by Prof. Eoin O Colgain

Monday 8 Jan 2024, 14:00 → 16:00 UTC

B436

Description

Tensions between cosmological data sets either point to systematics or missing physics. If the tensions are physical, I will argue that redshift dependent cosmological parameters are natural and highlight results in the literature that support the conclusion that the Lambda-CDM cosmological parameters may not be constant. Fitting parameters that evolve with redshift, a proxy for time, is a telltale signature of model breakdown.