A Comment on Self-Tuning and Vanishing Cosmological Constant in the Brane World
arXiv:hep-th/0002164 · doi:10.1016/S0370-2693(00)00468-8
Abstract
In this note we elaborate on various five dimensional contributions to the effective 4D cosmological constant in brane systems. In solutions with vanishing 5D cosmological constant we describe a non-local mechanism of cancellation of vacuum energy between the brane and the singularities. We comment on a hidden fine tuning which is implied by this observation.
7 pages, Latex, final version to appear in Phys. Lett. B