Graviton production from extra dimensions

Details Graviton production from extra dimensions Graviton production from extra dimensions

2002-06-21

arxiv.org/abs/hep-ph/0206210v1

Phys.Rev. D66 (2002) 104005

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX file, 14 pages, 4 figures

Scientific paper

10.1103/PhysRevD.66.104005

Graviton production due to collapsing extra dimensions is studied. The momenta lying in the extra dimensions are taken into account. A $D$-dimensional background is matched to an effectively four-dimensional standard radiation dominated universe. Using observational constraints on the present gravitational wave spectrum, a bound on the maximal temperature at the beginning of the radiation era is derived. This expression depends on the number of extra dimensions, as well as on the $D$-dimensional Planck mass. Furthermore, it is found that the extra dimensions have to be large.

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