PIRSA:10100078

One-loop corrections in slow-roll and in more general theories of inflation

Dimastrogiovanni, E. (2010). One-loop corrections in slow-roll and in more general theories of inflation. Perimeter Institute. https://pirsa.org/10100078

Dimastrogiovanni, Emanuela. One-loop corrections in slow-roll and in more general theories of inflation. Perimeter Institute, Oct. 29, 2010, https://pirsa.org/10100078 

          @misc{ pirsa_PIRSA:10100078,
            doi = {10.48660/10100078},
            url = {https://pirsa.org/10100078},
            author = {Dimastrogiovanni, Emanuela},
            keywords = {Cosmology},
            language = {en},
            title = {One-loop corrections in slow-roll and in more general theories of inflation},
            publisher = {Perimeter Institute},
            year = {2010},
            month = {oct},
            note = {PIRSA:10100078 see, \url{https://pirsa.org}}
          }

Emanuela Dimastrogiovanni University of Groningen

DOI 10.48660/10100078
Collection
Talk Type Conference
Subject

Abstract

I will present our work on loop corrections to the power spectrum of curvature fluctuations in single-field inflationary models. We consider both standard slow-roll (where the interactions between gravitons and the scalar are included for the first time) and non-canonical Lagrangians. We show that the tensor modes cannot be neglected since, in some models, they produce one loop contributions with an amplitude that is comparable to the one coming from the scalar sector. Our study of loop corrections in non-canonical theories characterized by a small speed of sound (c_s) provides quantitative bounds on c_s, to be compared with similar constraints derived from CMB observations.