Evolution of curvature perturbation in generalized gravity theories

Details Evolution of curvature perturbation in generalized gravity theories Evolution of curvature perturbation in generalized gravity theories

2009-06-03

arxiv.org/abs/0906.0643v3

Class.Quant.Grav.26:145016,2009

Physics

High Energy Physics

High Energy Physics - Theory

15pages, fixed references, accepted for publication in CQG

Scientific paper

10.1088/0264-9381/26/14/145016

Using the cosmological perturbation theory in terms of the delta-N formalism, we find the simple formulation of the evolution of the curvature perturbation in generalized gravity theories. Compared with the standard gravity theory, a crucial difference appears in the end-boundary of the inflationary stage, which is due to the non-ideal form of the energy momentum tensor that depends explicitly on the curvature scalar. Recent study shows that ultraviolet-complete quantum theory of gravity may be approximated by using a generalized gravity action. Our paper may give an important step in understanding the evolution of the curvature perturbation during inflation, where the energy momentum tensor may not be given by the ideal form due to the corrections from the fundamental theory.

Affiliated with

Also associated with

No associations

Rating

Evolution of curvature perturbation in generalized gravity theories 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 Evolution of curvature perturbation in generalized gravity theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of curvature perturbation in generalized gravity theories will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-193606