Gravitational Particle Production and the Moduli Problem

Details Gravitational Particle Production and the Moduli Problem Gravitational Particle Production and the Moduli Problem

1999-09-27

arxiv.org/abs/hep-ph/9909508v2

JHEP 0002:027,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX,7 pages, 1 figure. Minor corrections

Scientific paper

10.1088/1126-6708/2000/02/027

A theory of gravitational production of light scalar particles during and after inflation is investigated. We show that in the most interesting cases where long-wavelength fluctuations of light scalar fields can be generated during inflation, these fluctuations rather than quantum fluctuations produced after inflation give the dominant contribution to particle production. In such cases a simple analytical theory of particle production can be developed. Application of our results to the theory of quantum creation of moduli fields demonstrates that if the moduli mass is smaller than the Hubble constant then these fields are copiously produced during inflation. This gives rise to the cosmological moduli problem even if there is no homogeneous component of the classical moduli field in the universe. To avoid this version of the moduli problem it is necessary for the Hubble constant H during the last stages of inflation and/or the reheating temperature T_R after inflation to be extremely small.

Affiliated with

Also associated with

No associations

Rating

Gravitational Particle Production and the Moduli Problem 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 Gravitational Particle Production and the Moduli Problem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Particle Production and the Moduli Problem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-59560