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Graviton production from extra dimensions

Kerstin E. Kunze·Mairi Sakellariadou
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Abstract

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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Kerstin E. Kunze, Mairi Sakellariadou. 2002-06-21. Graviton production from extra dimensions. https://doi.org/10.1103/physrevd.66.104005

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