Primordial nongaussianities from consistency relations: a proof of principle

Abstract: Consistency relations are the cosmological analogues of the soft pion theorem, connecting the soft limit of certain correlators to other correlators. Due to their nonperturbative nature, they remain true also in fully nonlinear regimes (where the standard approach fails), and for astrophysically messy observables (like galaxy distributions). In this seminar I will discuss how we can use the consistency relations for large scale structures to determine whether or not inflation was driven by the dynamics of a single field. I will do that using a suite of N-body simulations for the matter distributions, and discuss how to extend this to a more realistic scenario.

cosmology and nongalactic astrophysicsother condensed matterquantum gasesstrongly correlated electronssuperconductivitygeneral relativity and quantum cosmologyHEP - theory

Audience: researchers in the topic

Carnegie Mellon theoretical physics