Generalized Slow Roll for Non-Canonical Kinetic Terms

Details Generalized Slow Roll for Non-Canonical Kinetic Terms Generalized Slow Roll for Non-Canonical Kinetic Terms

2011-04-22

arxiv.org/abs/1104.4500v2

Phys.Rev.D84:027303,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, minor changes reflect PRD accepted version

Scientific paper

10.1103/PhysRevD.84.027303

We show that the generalized slow-roll approach for calculating the power spectrum where the inflationary slow roll parameters are neither small nor slowly varying can be readily extended to models with non-canonical kinetic terms in the inflaton action. For example, rapid sound speed variations can arise in DBI models with features in the warp factor leading to features in the power spectrum. Nonetheless there remains a single source function for deviations that is simply related to the power spectrum. Empirical constraints on this source function can be readily interpreted in the context of features in the inflaton potential or sound speed.

Affiliated with

Also associated with

No associations

Rating

Generalized Slow Roll for Non-Canonical Kinetic Terms 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 Generalized Slow Roll for Non-Canonical Kinetic Terms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generalized Slow Roll for Non-Canonical Kinetic Terms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-483691