Cosmological Constraints on Large Extra Dimensions

Preprint

26 February 2001

preprint
Published by arXiv in arXiv

Abstract

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.

Keywords

COSMOLOGICAL CONSTRAINTS
LARGE EXTRA DIMENSIONS
MASSIVE KALUZA
KALUZA KLEIN

All Related Versions

Version 1, 2001-01-12, ArXiv
Version 2, 2001-02-26, ArXiv
Version 3, 2001-03-15, ArXiv
Published version: Physics Letters B, 508 (3-4), 335.

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