https://doi.org/10.1140/epjc/s10052-014-2779-5
Regular Article - Theoretical Physics
Is F-term hybrid inflation natural within minimal supersymmetric SO(10)?
1
Université de Lyon, Université Lyon1, CNRS/IN2P3, UMR5822, Institut de Physique Nucléaire de Lyon, 69622 , Villeurbanne Cedex, France
2
Department of Physics, King’s College London, University of London, Strand, London , WC2R 2LS, UK
* e-mail: mairi.sakellariadou@kcl.ac.uk
Received:
4
November
2013
Accepted:
6
February
2014
Published online:
25
February
2014
We examine whether F-term supersymmetric hybrid inflation can in a natural way be embedded within the minimal SO(10) model. We show that none of the singlets of the Standard Model symmetries in the minimal set of SO(10) representations can satisfy the conditions which are necessary for a scalar field to play the rôle of the inflaton. As a consequence, one has to introduce an extra scalar field, which, however, may spoil the naturalness of inflation within the context of SO(10). Nevertheless, if we add an extra scalar field, we are then able to construct a model that can accommodate flat directions, while it preserves the stability of the inflationary valley.
© The Author(s), 2014
