Dilaton tadpoles and mass in warped models

We review the brane world sum rules of Gibbons et al. for compact five-dime nsional warped models with identical four-geometries and bulk dynamics invo lving scalar fields with generic potential. We show that the absence of dil aton tadpoles in the action functional of the: theory is linked to one of t hese sum rules. Moreover, we calculate the dilaton mass term and derive the condition that is necessary for stabilizing the system. (C) 2001 Elsevier Science B.V. All rights reserved.