The Low Energy Effective Equations of Motion for Multibrane World Gravity

Details The Low Energy Effective Equations of Motion for Multibrane World Gravity The Low Energy Effective Equations of Motion for Multibrane World Gravity

2005-11-25

arxiv.org/abs/hep-th/0511257v3

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, JHEP style, minor corrections, added refferences

Scientific paper

The three 3-brane system with both positive or negative tension is studied in a low energy regime by using gradient expansion method. The effective equations of motion on the brane is derived and in particular we examine, in the first order, the radion effective lagrangian for this system. In this case, we show the solution of the modified Friedmann equation with dark radiation on the middle brane and the other 3-branes by direct elimination of the radion fields and Weyl scaling of the metric on the branes. We also derived the scalar-tensor gravity on the branes.

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