String Gas Cosmology and Non-Gaussianities

Details String Gas Cosmology and Non-Gaussianities String Gas Cosmology and Non-Gaussianities

2007-12-14

arxiv.org/abs/0712.2477v2

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 1 figure 4 clarifying sentences added

Scientific paper

Recently it has been shown that string gas cosmology, an alternative model of the very early universe which does not involve a period of cosmological inflation, can give rise to an almost scale invariant spectrum of metric perturbations. Here we calculate the non-Gaussianities of the spectrum of cosmological fluctuations in string gas cosmology, and find that these non-Gaussianities depend linearly on the wave number and that their amplitude depends sensitively on the string scale. If the string scale is at the TeV scale, string gas cosmology could lead to observable non-Gaussianities, if it is close to the Planck scale, then the non-Gaussianities on current cosmological scales are negligible.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-351831