Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

Organizers are David Spergel, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held at either Princeton University or the Institute for Advance Study. Check the calendar for the meeting location. This week's meeting is at the Institute for Advanced Study. Attendees can bring their own lunch or stop at the IAS Dining Hall. The West Seminar room is in a building which is a short walk from the main dining area. ABSTRACT: The inflationary models with a small oscillating component in the potential are known to have oscillatory features in the power spectrum of scalar fluctuations. The models inevitably produce oscillatory 3-point and higher correlation functions -- the resonant non-Gaussianity. I will argue that unitarity of the effective field theory of inflation ensures that the signal in the 2-point function is dominant over that of the higher correlation functions. Therefore the signatures of oscillations are more likely to be detected in the power spectrum.