Speaker
Valerie Domcke
(DESY)
Description
A remarkable feature of the recently published Planck data is that one of the oldest models of inflation, the R^2 inflation model proposed by Starobinsky, fits the data strikingly well. In this talk, I show how the Starobinsky model arises asymptotically in the large field limit of a supergravity D-term hybrid inflation model based on an approximate superconformal symmetry. This superconformal symmetry implies a remarkably simple structure in the Jordan frame, leading to a well-motivated and highly predictive class of models.
