Particles and gravitons creation after inflation from a 5D vacuum

Details Particles and gravitons creation after inflation from a 5D vacuum Particles and gravitons creation after inflation from a 5D vacuum

2011-03-11

arxiv.org/abs/1103.2391v5

Eur. Phys. J. Plus 126: 90 (2011)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To be published in Eur. Phys. J. Plus

Scientific paper

We use the Bogoliubov formalism to study both, particles and gravitons creation at the reheating epoch, after a phase transition from inflation to a radiation dominated universe. The modes of the inflaton field fluctuations and the scalar fluctuations of the metric at the end of inflation are obtained by using a recently introduced formalism related to the Induced Matter theory of gravity. The interesting result is that the number of created particles is bigger than $10^{90}$ on cosmological scales. Furthermore, the number of gravitons are nearly $10^{-17}$ times smaller than the number of created particles. In both cases, these numbers rapidly increases on cosmological scales.

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