Graviton production from extra dimensions

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.

LaTeX file, 14 pages, 4 figures

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Cited by in corpus (4)

• Primordial magnetogenesis
• Primordial magnetic seed fields from extra dimensions
• Can be gravitational waves markers for an extra-dimension?
• Can thermal input from a prior universe account for relic graviton production?