New Probes of Primordial non-Gaussianity from Large Scale Structure and Cosmic Microwave Background

This paper develops new probes of primordial non-Gaussianity (PNG) by combining information from large-scale structure (LSS) observations, like galaxy clustering and weak lensing, with Cosmic Microwave Background (CMB) data. Focusing on optimized statistical estimators for various PNG shapes, the forecasts show these combined probes significantly enhance constraints on PNG parameters, breaking degeneracies and providing a powerful framework for future precision cosmology to reconstruct early universe physics.