Speaker
Pedro Carrilho
(Queen Mary University of London)
Description
I will describe recent developments on the nonlinear modelling of LSS, in the context of momentum-exchange interacting dark energy. I will review the Dark Scattering model and show how it can alleviate the current $S_8$ tension between early and late-Universe data. I will present new constraints on this interaction from a likelihood analysis of the BOSS DR12 power spectrum multipoles, while briefly describing the EFT-based model and likelihood used in the analysis. I will show a hint of a detection of this dark coupling, driven by the preference of late-time data for a lower amplitude. If confirmed, this result could restore concordance between the early and the late Universe.
Primary author
Pedro Carrilho
(Queen Mary University of London)
