Radiation back reaction on moving branes

Abstract

This paper addresses the radiation back reaction problem for cosmological branes. A general framework is provided in which results are given for the radiation reaction with massles and massive scalar fields with flat extra dimensions and massless conformal fields in anti-de Sitter extra dimensions. For massless scalar field radiation the back reaction terms in the equation of motion are non-analytic. The interpretation of the radiation reaction terms is discussed and the equations of motion solved in simple cases. Nucleosynthesis bounds on dark radiation give a lower bound on the string vacuum energy scale of $\sqrt{A_T}{m}_p$, where $A_T$ is the tensor perturbation amplitude in the cosmic microwave background.

arXiv comment12 pages, 3 figures, ReVTeX

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Cited by in corpus (2)

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