# 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

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Abstract:
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After the discovery of the cosmic expansion, the local rate - the Hubble
Constant (H_{0}) - 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 H_{0} continues unabated. A
discrepancy between local determinations of H_{0} 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.