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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 massless 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 nonanalytic. 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 √ATmp, where AT is the tensor perturbation amplitude in the cosmic microwave background. © 2004 The American Physical Society.
Author(s): Moss IG, Norman JP
Publication type: Article
Publication status: Published
Journal: Physical Review D
Print publication date: 01/01/2004
ISSN (print): 0556-2821
ISSN (electronic): 1089-4918
Publisher: American Physical Society
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