Speaker
Prof.
Sebastian Garcia-Saenz
(SUSTech)
Description
In models of inflation with multiple scalar fields, the inflaton describes a curve in the internal space spanned by the fields. When this curve deviates strongly from a geodesic, interesting observational signatures arise, including enhanced fluctuations and peculiar non-Gaussianities. In this talk I will review the application of effective field theory methods to this class of models, before presenting recent work on the issue of perturbative control and loop corrections.
