Radiation back reaction on moving branes

Details Radiation back reaction on moving branes Radiation back reaction on moving branes

2004-08-14

arxiv.org/abs/hep-th/0408117v1

Phys.Rev. D70 (2004) 103506

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 3 figures, ReVTeX

Scientific paper

10.1103/PhysRevD.70.103506

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.

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