Stochastic Background of Gravitational Waves from Fermions

Details Stochastic Background of Gravitational Waves from Fermions Stochastic Background of Gravitational Waves from Fermions

2012-03-22

arxiv.org/abs/1203.4943v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 1 figure, submitted to PRL

Scientific paper

Preheating and other particle production phenomena in the early Universe can give rise to high- energy out-of-equilibrium fermions with an anisotropic stress. We develop a formalism to calculate the spectrum of gravitational waves due to fermions, and apply it to a variety of scenarios after inflation. We pay particular attention to regularization issues. We show that fermion production sources a stochastic background of gravitational waves with a significant amplitude, but we find that typical frequencies of this new background are not within the presently accessible direct detec- tion range. However, small-coupling scenarios might still produce a signal observable by planned detectors, and thus open a new window into the physics of the very early Universe.

Affiliated with

Also associated with

No associations

Rating

Stochastic Background of Gravitational Waves from Fermions 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 Stochastic Background of Gravitational Waves from Fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastic Background of Gravitational Waves from Fermions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-381642