arXiv:hep-th/0002164·v2·High Energy Physics — Theory
A Comment on Self-Tuning and Vanishing Cosmological Constant in the Brane World
Stefan Forste🇩🇪 · Zygmunt Lalak🇩🇪 · Stephane Lavignac🇩🇪 · Hans Peter Nilles🇩🇪
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.
Comments: 7 pages, Latex, final version to appear in Phys. Lett. B