ar X iv : 0 70 5 . 21 76 v 3 [ he p - ph ] 1 9 N ov 2 00 7 Gravitational particle production in braneworld cosmology

Abstract

Gravitational particle production in time variable metric of an expanding universe is efficient only when the Hubble parameter H is not too small in comparison with the particle mass. In standard cosmology, the huge value of the Planck mass M P l makes the mechanism phenomenologically irrelevant. On the other hand, in braneworld cosmology the expansion rate… (More)

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Cite this paper

@inproceedings{BambiarXI, title={ar X iv : 0 70 5 . 21 76 v 3 [ he p - ph ] 1 9 N ov 2 00 7 Gravitational particle production in braneworld cosmology}, author={Cosimo Bambi} }