Relaxing Cosmological Constraints on Large Extra Dimensions

Details Relaxing Cosmological Constraints on Large Extra Dimensions Relaxing Cosmological Constraints on Large Extra Dimensions

2004-07-20

arxiv.org/abs/hep-ph/0407231v2

Phys.Rev. D71 (2005) 024008

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, latex, revtex4; added a short discussion of other constraints, references

Scientific paper

10.1103/PhysRevD.71.024008

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.

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