Cosmological Constraints on Large Extra Dimensions
高能物理 - 唯象学
2008-11-26 v3 天体物理学
高能物理 - 理论
摘要
We calculate the production of massive Kaluza-Klein(KK) modes via nucleon-nucleon gravi-bremsstrahlung in the early universe. Overproduction of these states would result in early matter domination and therefore a low age for the universe so it is possible to place constraints on the number and size of large extra dimensions. The constraints are stronger than those from Sn1987a - for 2 large extra dimensions and T_QCD=170 MeV, we show the fundamental scale must be larger than 1,000 TeV.
引用
@article{arxiv.hep-ph/0101131,
title = {Cosmological Constraints on Large Extra Dimensions},
author = {Malcolm Fairbairn},
journal= {arXiv preprint arXiv:hep-ph/0101131},
year = {2008}
}
备注
8 pages, 2 figures, accepted in PLB