| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1845167 | Nuclear Physics B - Proceedings Supplements | 2007 | 4 Pages |
Abstract
Many interesting cosmological models predict an enhancement of the Hubble expansion rate in the early Universe. Among these are some braneworld models, models with a kination phase and scalar-tensor models. In this paper we show that the pre–Big–Bang–Nucleosynthesis (pre-BBN) enhancement can be strongly constrained by the combined use of the bounds on the Dark Matter relic density and antiproton production. For a Dark Matter particle of 100 GeV the maximal enhancement of the Hubble rate ranges from a few up to a factor of 30.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
