Energy-momentum for Randall-Sundrum models
  We investigate the conservation law of energy-momentum for Randall-Sundrum models by the general displacement transform. The energy-momentum current has a superpotential and are therefore identically conserved. It is shown that for Randall-Sundrum solution, the momentum vanishes and most of the bulk energy is localized near the Planck brane. The energy density is $\epsilon = \epsilon_0 e^{-3k \mid y \mid}$. 
Yu-Xiao Liu, Li-Jie Zhang, Yong-Qiang Wang, Yi-Shi Duan