Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-06-12
JCAP 0609 (2006) 003
Physics
High Energy Physics
High Energy Physics - Phenomenology
27pages, 8figures, to appear in JCAP
Scientific paper
10.1088/1475-7516/2006/09/003
There are many inflationary models in which inflaton field does not satisfy the slow-roll condition. However, in such models, it is always difficult to generate the curvature perturbation during inflation. Thus, to generate the curvature perturbation, one must introduce another component to the theory. To cite a case, curvatons may generate dominant part of the curvature perturbation after inflation. However, we have a question whether it is unrealistic to consider the generation of the curvature perturbation during inflation without slow-roll. Assuming multi-field inflation, we encounter the generation of the curvature perturbation during inflation without slow-roll. The potential along equipotential surface is flat by definition and thus we do not have to worry about symmetry. We also discuss about KKLT models, in which corrections lifting the inflationary direction may not become a serious problem if there is a symmetry enhancement at the tip (not at the moving brane) of the inflationary throat.
No associations
LandOfFree
Elliptic Inflation: Generating the curvature perturbation without slow-roll 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 Elliptic Inflation: Generating the curvature perturbation without slow-roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elliptic Inflation: Generating the curvature perturbation without slow-roll will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-647924