Scalar cosmological perturbation in an inflationary brane world driven by the bulk inflaton

Details Scalar cosmological perturbation in an inflationary brane world driven by the bulk inflaton Scalar cosmological perturbation in an inflationary brane world driven by the bulk inflaton

2003-12-09

arxiv.org/abs/hep-th/0312087v1

Int.J.Mod.Phys. A19 (2004) 4085-4100

Physics

High Energy Physics

High Energy Physics - Theory

17pages, Latex format

Scientific paper

10.1142/S0217751X04019494

We investigate scalar perturbations from inflation in a bulk inflaton braneworld model. Using the generalized longitudinal gauge, we derive and solve the full set of scalar perturbation equations. Our exact results support the recent argument that for the de Sitter brane the square of the radion mass is not positive, showing that unlike the flat brane case, the de Sitter brane is not stable.

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