Laboratory for Particle Physics (LTP)

LTP Colloquium

Hubble Tension — is Cosmology in Trouble?

Thursday, September 21, 2023, 16:00
WHGA Auditorium

Bruno Leibundgut, TU München

After the discovery of the cosmic expansion, the local rate - the Hubble Constant (H0) - with which the universe grows has become one of the most important cosmological parameters. In the current models, it sets the absolute scale and age of the universe. Its exact value has been debated from the start. Despite significant improvements over the past two decades, the discussion on H0 continues unabated. A discrepancy between local determinations of H0 and the ones based on cosmological models has emerged and is often referred to as 'Hubble tension'. If the discrepancy persists then the cosmological model is either incomplete or wrong.