Single superfield inflationary models

by Takahiro Terada (U. Tokyo)

Monday 11 May 2015, 16:30 → 17:30 Europe/Berlin

semiar room 2, building 2A (DESY Hamburg)

In this talk, I will introduce a developing field of (large-field) inflation in supergravity using a single chiral superfield, particularly focusing on the method utilizing the shift-symmetric quartic term in the inflaton Kahler potential. The quartic term has a dual role: it prevents the inflaton potential becoming negative at the large field region, and it stabilizes the scalar superpartner of the inflaton. This method does not require tuning, but once tuning is accepted, almost arbitrary positive semidefinite scalar potentials can be constructed.

Slides DESY_seminar.pdf