Seminar by Ennio Salvioni (IFAE): ‘Probing the Dark Sector with Large Scale Structure’

Title: ‘Probing the Dark Sector with Large Scale Structure’

Speaker: Ennio Salvioni (IFAE)

Venue&Time: Red Room / 15:00

Abstract: Precision cosmology offers opportunities to test the nature of dark matter independently of any interactions with the visible sector. I will discuss how data from galaxy surveys, including the ongoing DESI and Euclid projects, can be leveraged to probe new dynamics in the dark sector. For this purpose, I will show how to extend the Effective Field Theory of Large Scale Structure to include physics beyond the Standard Model, enabling perturbative computations of the power spectrum of galaxies. The scenarios I will discuss include long-range dark matter self-interactions, and sub-components of dark matter exhibiting suppressed growth of structure, such as ultra-light axions or light thermal relics.