Gravitational particle production in braneworld cosmology
High Energy Physics - Phenomenology
2009-06-12 v3 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
Gravitational particle production in time variable metric of an expanding universe is efficient only when the Hubble parameter is not too small in comparison with the particle mass. In standard cosmology, the huge value of the Planck mass makes the mechanism phenomenologically irrelevant. On the other hand, in braneworld cosmology the expansion rate of the early universe can be much faster and many weakly interacting particles can be abundantly created. Cosmological implications are discussed.
Keywords
Cite
@article{arxiv.0705.2176,
title = {Gravitational particle production in braneworld cosmology},
author = {C. Bambi and F. R. Urban},
journal= {arXiv preprint arXiv:0705.2176},
year = {2009}
}