Speaker
Mr
Jochen P. Baumann
(Max-Planck-Institut für Physik (Werner-Heisenberg-Institut))
Description
We explore the novel possibility that the inflaton responsible for cosmological inflation is a gauge non-singlet in supersymmetric Grand Unified Theories. For definiteness we consider SUSY hybrid inflation where we show that the scalar components of gauge non-singlet superfields, together with fields in conjugate representations, may form a D-flat direction suitable for inflation.
We apply these ideas to SUSY models with an Abelian gauge group, a Pati-Salam gauge group and finally Grand Unified Theories based on SO(10) where the scalar components of the matter superfields in the 16s may combine with a single $\bar 16$ to form the inflaton, with the right-handed sneutrino direction providing a possible viable trajectory for inflation.
Assuming sneutrino inflation, we calculate the one-loop Coleman-Weinberg corrections and the two-loop corrections from gauge interactions giving rise to the ''gauge eta-problem'' and show that both corrections do not spoil inflation, and that the monopole problem can be resolved.
Primary authors
Mr
Jochen P. Baumann
(Max-Planck-Institut für Physik (Werner-Heisenberg-Institut))
Dr
Koushik Dutta
(Max-Planck-Institut für Physik (Werner-Heisenberg-Institut))
Prof.
Mar Bastero-Gil
(Departamento de Fisica Teórica y del Cosmos and Centro Andaluz de Fisica de Particulas Elementales, Universidad de Granada)
Mr
Philipp M. Kostka
(Max-Planck-Institut für Physik (Werner-Heisenberg-Institut))
Dr
Stefan Antusch
(Max-Planck-Institut für Physik (Werner-Heisenberg-Institut))
Prof.
Steve F. King
(School of Physics and Astronomy, University of Southampton)
