Speaker
Andrea Federico Sanfilippo
(Technische Universität München)
Description
Understanding the infrared dynamics of the massless, minimally coupled, real scalar field in de Sitter space remains an important open problem. When computed in perturbation theory, the in-in correlation functions are plagued by infrared divergences and secularly growing terms. The Soft de Sitter Effective Theory (SdSET) was developed as a framework in which these issues can be addressed. In this talk I will discuss how the Method of Regions can be applied to simplify the necessary matching computations to determine the free parameters of the SdSET and how the mentioned issues are resolved within the EFT.
Primary authors
Andrea Federico Sanfilippo
(Technische Universität München)
Prof.
Martin Beneke
(Technische Universität München)
Dr
Patrick Hager
(Johannes Gutenberg-Universität Mainz)
