Next-to-leading resummations in cosmological perturbation theory

Details Next-to-leading resummations in cosmological perturbation theory Next-to-leading resummations in cosmological perturbation theory

2010-11-19

arxiv.org/abs/1011.4477v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

29 pages, 18 figures. Accepted for publication in JCAP

Scientific paper

One of the nicest results in cosmological perturbation theory is the analytical resummaton of the leading corrections at large momentum, which was obtained by Crocce and Scoccimarro for the propagator. Using an exact evolution equation, we generalize this result, by showing that a class of next-to-leading corrections can also be resummed at all orders in perturbation theory. The new corrections modify the propagator by a few percent in the Baryonic Acoustic Oscillation range of scales, and therefore cannot be neglected in resummation schemes aiming at an accuracy compatible with future generation galaxy surveys. Similar tools can be employed to derive improved approximations for the Power Spectrum.

Affiliated with

Also associated with

No associations

Rating

Next-to-leading resummations in cosmological perturbation theory 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 Next-to-leading resummations in cosmological perturbation theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Next-to-leading resummations in cosmological perturbation theory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-117770