HET Seminar | Fundamental Physics from Large-Scale Structure Cosmology

I will present a program for extracting cosmological information by combining effective field theory techniques with data from galaxy surveys. I will highlight previous successes of this program and share new results from my independent re-analyses of the public DESI survey data, which incorporate additional information from higher-order statistics. These results include new measurements of fundamental cosmological parameters and tight constraints on neutrino masses, cosmic inflation, dark matter, and the dark energy equation of state. I will argue that the dark energy results may hint at new a fundamental force between dark matter and dark energy, which can be tested with upcoming large-scale structure data.