Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-05-17
Phys.Rev.D76:043526,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 7 figures, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.76.043526
We explore extensions of hybrid inflationary models in the context of supersymmetric D-term inflation. We point out that a large variety of inflationary scenarios can be encountered when the field content is extended. It is not only possible to get curvaton type models but also scenarios in which different fields, with nontrivial statistical properties, contribute to the primordial curvature fluctuations. We explore more particularly the parameter space of these multiple field inflationary models. It is shown that there exists a large domain in which significant primordial non-Gaussianities can be produced while preserving a scale free power spectrum for the metric fluctuations. In particular we explicitly compute the expected bi- and trispectrum for such models and compared the results to the current and expected observational constraints. It is shown that it is necessary to use both the bi- and tri-spectra of CMB anisotropies to efficiently reduce their parameter space.
Bernardeau Francis
Brunier Tristan
No associations
LandOfFree
Non-Gaussianities in extended D-term inflation 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 Non-Gaussianities in extended D-term inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Gaussianities in extended D-term inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-142185