Big Bang Nucleosynthesis Constraints on Brane Cosmologies
Jonathan D. Bratt, A. C. Gault, Robert J. Scherrer, T. P. Walker
Abstract
We examine constraints from Big Bang nucleosynthesis on type II Randall-Sundrum brane cosmologies with both a dark radiation component and a quadratic term that depends on the 5-dimensional Planck mass, M5. Using limits on the abundances of deuterium and helium-4, we calculate the allowed region in the M5-dark radiation plane and derive the precise BBN bound on M5 alone with no dark radiation: M5 > 13 TeV.
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