Cosmological Perturbations in Brane Worlds: Brane Bending and Anisotropic Stresses

Details Cosmological Perturbations in Brane Worlds: Brane Bending and Anisotropic Stresses Cosmological Perturbations in Brane Worlds: Brane Bending and Anisotropic Stresses

2000-12-13

arxiv.org/abs/hep-th/0012116v1

Nucl.Phys. B605 (2001) 215-233

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, two figures

Scientific paper

10.1016/S0550-3213(01)00213-9

Using a metric-based formalism to treat cosmological perturbations, we discuss the connection between anisotropic stress on the brane and brane bending. First we discuss gauge-transformations, and draw our attention to gauges, in which the brane-positions remain unperturbed. We provide a unique gauge, where perturbations both on the brane and in the bulk can be treated with generality. For vanishing anisotropic stresses on the brane, this gauge reduces to the generalized longitudinal gauge. We further comment on the gravitational interaction between the branes and the bulk.

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