Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-01-05
JCAP 0906:024,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
10.1088/1475-7516/2009/06/024
Motivated by a recent discussion about the role of flat directions, a typical feature of supersymmetric models, in the process of particle production in the early universe a consistent model of inflation and preheating in supergravity with MSSM fields has been built. It is based on a model proposed by M. Kawasaki, M. Yamaguchi and T. Yanagida. In the inflationary stage, the flat directions acquire large vacuum expectation values (VEVs) without spoiling the background of slow-roll, high-scale inflation consistent with the latest WMAP5 observational data. In the stage of particle production, naturally following inflation, the role of flat direction large VEVs depends strongly on effects connected with the supergravity framework and non-renormalizable terms in the superpotential, which have been neglected so far in the literature. Such effects turn out to be very important, changing the previous picture of preheating in the presence of large flat direction VEVs by allowing for efficient preheating from the inflaton.
Kaminska Anna
Pacholek Pawel
No associations
LandOfFree
Inflation and Preheating in Supergravity with MSSM Flat Directions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inflation and Preheating in Supergravity with MSSM Flat Directions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inflation and Preheating in Supergravity with MSSM Flat Directions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-34980