Tensor Modes from a Primordial Hagedorn Phase of String Cosmology

Details Tensor Modes from a Primordial Hagedorn Phase of String Cosmology Tensor Modes from a Primordial Hagedorn Phase of String Cosmology

2006-04-18

arxiv.org/abs/hep-th/0604126v1

Phys.Rev.Lett.98:231302,2007

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1103/PhysRevLett.98.231302

It has recently been shown that a Hagedorn phase of string gas cosmology can provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the need for an intervening period of de Sitter expansion. In this paper we compute the spectrum of tensor metric fluctuations (gravitational waves) in this scenario, and show that it is also nearly scale-invariant. However, whereas the spectrum of scalar modes has a small red-tilt, the spectrum of tensor modes has a small blue tilt, unlike what occurs in slow-roll inflation. This provides a possible observational way to distinguish between our cosmological scenario and conventional slow-roll inflation.

Affiliated with

Also associated with

No associations

Rating

Tensor Modes from a Primordial Hagedorn Phase of String Cosmology 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 Tensor Modes from a Primordial Hagedorn Phase of String Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tensor Modes from a Primordial Hagedorn Phase of String Cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-237100