Theory HEP Seminar

Non-Gaussianities from the Effective Theory Approach to Inflation

Matteo Fasiello

INFN

We fully analyze the parameters space of a recently introduced effective field theory of inflation. We find that, in some regions, the leading contributions to non-Gaussianities can be generated by the “extrinsic curvature”-generated interaction terms. These terms are such that two derivatives can act on the scalar field that drives inflation. We show how some of said interactions produce distinctive bispectrum and trispectrum shape functions.