Fundamental Physics from Cosmic Large-Scale Structure

par Mikhail Ivanov (MIT)

mercredi 24 sept. 2025, 14:30 → 16:00 Europe/Paris

Amphithéâtre Léon Motchane (IHES)

Séminaire Amplitudes et Gravitation sur l'Yvette (IHES/IPhT)

Elucidating the nature of dark matter, dark energy, and dynamics of the early universe stand as major challenges of modern cosmology and particle physics. I will present a new program of addressing these challenges with spectroscopic galaxy surveys. This program builds on effective field theory (EFT) ideas borrowed from particle physics. The application of the EFT to large-scale structure allows for sub-percent precision analytic understanding of galaxy clustering on quasi-linear scales and provides an unmatched flexibility in testing new physics scenarios beyond the standard cosmological model. I will share some results of this program that include new measurements of fundamental cosmological parameters and novel constraints on dark energy, dark matter, and the physics of the early universe.

 

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