Speaker
Laura Iacconi
(Queen Mary University of London)
Description
Single-field models of inflation that feature a non-attractor phase might lead to enhanced scalar fluctuation on scales much smaller than those seeding large-scale structure formation. In this scenario, it is possible that the spike of power at high wavenumber might spoil the successful predictions of a nearly Gaussian, scale-invariant power on large scales, e.g. in the form of loop corrections to the large-scale power spectrum. In this talk we discuss analytical estimates for the 1-loop correction, derived by applying the $\delta N$ formalism. To clarify how our results relate with the existing literature, we make an explicit connection to results obtained by employing the in-in formalism.
Primary author
Laura Iacconi
(Queen Mary University of London)
Co-authors
David Mulryne
(Queen Mary University of London)
David Seery
(University of Sussex)
