Full-shape analysis with simulation-based priors: constraints on single field inflation from BOSS

Understand

Perturbative, or effective field theory (EFT)-based, full-shape analyses of galaxy clustering data involve ``nuisance parameters'' to capture various observational effects such as the galaxy-dark matter connection (galaxy bias).

• We present an efficient approach to set informative physically motivated priors on these parameters.
• We extract these priors from simulated galaxy catalogs based on halo occupation distribution (HOD) models.
• First, we build a joint distribution between EFT galaxy bias and HOD parameters from a set of 10,500 HOD mock catalogs.