  This dissertation aims at studying the braneworld models in the context
proposed by Randall and Sundrum. The focus is on the spin-0 perturbations in
the Kerr space-time as a 4-dimensional braneworld.
  The work deals the main aspects of Einstein General Relativity as well as
perturbations of black holes metrics. We also review the Randall-Sundrum models
and their motivations and attempts to describe braneworld black holes. In the
end the Kerr-Randall-Sundrum black string scalar perturbation and superradiance
are obtained.
