17–18 Dec 2025
Centre for Particle Theory
Europe/London timezone

Dynamical Dark Energy and Tensions - A Story of Conflicting Datasets

18 Dec 2025, 14:50
30m
Ph30 (Centre for Particle Theory)

Ph30

Centre for Particle Theory

Speaker

Dong Ha Lee (University of Sheffield)

Description

Since the discovery of the accelerated expansion of the Universe at the end of the past century, we have obtained an abundance of precision measurements of our Universe, opening the gates for the era of precision cosmology.
However, with these new measurements and surveys came tensions and hints of new physics beyond that of the Standard Model of cosmology and particle physics.
I will attempt to briefly describe the key observations which allow us to understand so much about our Universe and how some inconsistencies between these observations have led us into a discussion about the incompleteness of the $\Lambda$CDM model, with a particular focus on the nature of dynamical dark energy and some candidates to describe it both from a phenomenological and a more fundamental level.

Author

Dong Ha Lee (University of Sheffield)

Presentation materials

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