Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-10-16
JCAP 0912:012,2009
Physics
High Energy Physics
High Energy Physics - Theory
15 pages, 1 figures, minor changes
Scientific paper
10.1088/1475-7516/2009/12/012
We consider primordial fluctuations in thermal inflation scenario. Since the thermal inflation drives about 10 $e$-folds after the standard inflation, the time of horizon-exit during inflation corresponding to the present observational scale shifts toward the end of inflation. It generally makes the primordial power spectrum more deviated from a scale-invariant one and hence renders some models inconsistent with observations. We present a mechanism of generating the primordial curvature perturbation at the end of thermal inflation utilizing a fluctuating coupling of a flaton field with the fields in thermal bath. We show that, by adopting the mechanism, some inflation models can be liberated even in the presence of the thermal inflation. We also discuss non-Gaussianity in the mechanism and show that large non-Gaussianity can be generated in this scenario.
Kawasaki Masahiro
Takahashi Tomo
Yokoyama Shuichiro
No associations
LandOfFree
Density Fluctuations in Thermal Inflation and Non-Gaussianity 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 Density Fluctuations in Thermal Inflation and Non-Gaussianity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density Fluctuations in Thermal Inflation and Non-Gaussianity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-123480