Linearized gravity on branes: from Newton's law to cosmological perturbations

Abstract

We review here how Newton's law can be approximately recovered in the simple, "paradigmatic", case of a flat $Z_2$-symmetric brane in a 5-D anti-de Sitter bulk. We then comment on the difficulties encountered so far in extending this analysis to cosmological perturbations on a Robertson-Walker brane.

11 pages, Tex, proceedings of the talk presented at the conference ERE 2002 held in Menorca in september 2002