Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-11-23
Nucl.Phys. B582 (2000) 593-626
Physics
High Energy Physics
High Energy Physics - Phenomenology
42 pages, 8 figures. Minor changes, version accepted in Nucl. Phys. B
Scientific paper
10.1016/S0550-3213(00)00301-1
Recently, there has been some interest for building supersymmetric models of double inflation. These models, realistic from a particle physics point of view, predict a broken-scale-invariant power spectrum of primordial cosmological perturbations, that may explain eventual non-trivial features in the present matter power spectrum. In previous works, the primordial spectrum was calculated using analytic slow-roll approximations. However, these models involve a fast second-order phase transition during inflation, with a stage of spinodal instability, and an interruption of slow-roll. For our previous model of double D-term inflation, we simulate numerically the evolution of quantum fluctuations, taking into account the spinodal modes, and we show that the semi-classical approximation can be employed even during the transition, due to the presence of a second inflaton field. The primordial power spectrum possesses a rich structure, and possibly, a non-Gaussian spike on observable scales.
No associations
LandOfFree
Features in the primordial power spectrum of double 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 Features in the primordial power spectrum of double D-term inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Features in the primordial power spectrum of double D-term inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-304564