Silvia Galli: The H0 tension

by Silvia Galli

Tuesday 5 May 2020, 10:00 → 11:00 Europe/Zurich

CERN

Speaker: Silvia Galli (Institut d'Astrophysique de Paris)

Title: The H0 tension

Abstract: In 2019, cosmology witnessed a remarkable milestone. The difference between early-time and late-time probes measuring the expansion rate of the universe, i.e. the Hubble constant, reached an unexplained amplitude of more than 5 σ. This is currently one of the largest discrepancies in cosmology, and if confirmed it would call for a crisis of the LCDM model. However, systematics in the measurements might still be the culprit of such a difference. In this talk, I will review the current tension between measurements from different probes. I will discuss some of the proposed solutions and prospects for the future.

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The virtual colloquium is available for streaming and download at: https://videos.cern.ch/record/2717372