Non-Gaussianity from Inflation

Details Non-Gaussianity from Inflation Non-Gaussianity from Inflation

2001-12-19

arxiv.org/abs/hep-ph/0112261v2

Phys.Rev. D65 (2002) 103505

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version accepted for publication in Phys. Rev. D. 19 pages, LaTeX file

Scientific paper

10.1103/PhysRevD.65.103505

Correlated adiabatic and isocurvature perturbation modes are produced during inflation through an oscillation mechanism when extra scalar degrees of freedom other than the inflaton field are present. We show that this correlation generically leads to sizeable non-Gaussian features both in the adiabatic and isocurvature perturbations. The non-Gaussianity is first generated by large non-linearities in some scalar sector and then efficiently transferred to the inflaton sector by the oscillation process. We compute the cosmic microwave background angular bispectrum, providing a characteristic feature of such inflationary non-Gaussianity,which might be detected by upcoming satellite experiments.

Affiliated with

Also associated with

No associations

Rating

Non-Gaussianity from 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-Gaussianity from Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Gaussianity from Inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-521558