Effective Lagrangians for physical degrees of freedom in the   Randall-Sundrum model
  We derive the second variation Lagrangian of the Randall-Sundrum model with two branes, study its gauge invariance and diagonalize it in the unitary gauge. We also show that the effective four-dimensional theory looks different on different branes and calculate the observable mass spectra and the couplings of the physical degrees of freedom of 5-dimensional gravity to matter. 
Edward E. Boos, Yuri A. Kubyshin, Mikhail N. Smolyakov, and Igor P.   Volobuev