Relaxing Cosmological Constraints on Large Extra Dimensions
High Energy Physics - Phenomenology
2009-11-10 v2 Astrophysics
Abstract
We reconsider cosmological constraints on extra dimension theories from the excess production of Kaluza-Klein gravitons. We point out that, if the normalcy temperature is above 1 GeV, then graviton states produced at this temperature will decay early enough that they do not affect the present day dark matter density, or the diffuse gamma ray background. We rederive the relevant cosmological constraints for this scenario.
Cite
@article{arxiv.hep-ph/0407231,
title = {Relaxing Cosmological Constraints on Large Extra Dimensions},
author = {Cosmin Macesanu and Mark Trodden},
journal= {arXiv preprint arXiv:hep-ph/0407231},
year = {2009}
}
Comments
17 pages, latex, revtex4; added a short discussion of other constraints, references