Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-04-19
Phys.Rev.D74:083522,2006
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
17 pages, 6 figures. Final version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.74.083522
The evolution of gauge invariant second-order scalar perturbations in a general single field inflationary scenario are presented. Different second order gauge invariant expressions for the curvature are considered. We evaluate perturbatively one of these second order curvature fluctuations and a second order gauge invariant scalar field fluctuation during the slow-roll stage of a massive chaotic inflationary scenario, taking into account the deviation from a pure de Sitter evolution and considering only the contribution of super-Hubble perturbations in mode-mode coupling. The spectra resulting from their contribution to the second order quantum correlation function are nearly scale-invariant, with additional logarithmic corrections to the first order spectrum. For all scales of interest the amplitude of these spectra depend on the total number of e-folds. We find, on comparing first and second order perturbation results, an upper limit to the total number of e-folds beyond which the two orders are comparable.
Finelli Fabio
Marozzi Giovanni
Vacca Gian Paolo
Venturi Giovanni
No associations
LandOfFree
Second Order Gauge-Invariant Perturbations during 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 Second Order Gauge-Invariant Perturbations during Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Second Order Gauge-Invariant Perturbations during Inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-236965