7-11 September 2015
Warsaw, Poland
Europe/Zurich timezone

Massive vector multiplet inflation with DBI type action

10 Sep 2015, 14:40
Rm 111+112 ()

Rm 111+112


Yusuke Yamada (Waseda University, Japan)


We investigate the inflation model with a massive vector multiplet in a case that the action of the vector multiplet is extended to the Dirac-Born-Infeld (DBI) type one in 4 dimensional N=1 supergravity. We show the massive DBI action, and find that the higher order corrections associated with the DBI-extension make the scalar potential flat with a simple choice of the matter couplings. We also discuss the DBI-extension of the new minimal Starobinsky model, and find that it is dual to a special class of the massive DBI action.

Presentation Materials