Vanishing of cosmological constant in nonfactorizable geometry

Details Vanishing of cosmological constant in nonfactorizable geometry Vanishing of cosmological constant in nonfactorizable geometry

2000-11-17

arxiv.org/abs/hep-th/0011159v2

Phys.Rev. D63 (2001) 105021

Physics

High Energy Physics

High Energy Physics - Theory

8 Pages(expanded version), Accepted in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.63.105021

We generalize the results of Randall and Sundrum to a wider class of four-dimensional space-times including the four-dimensional Schwarzschild background and de Sitter universe. We solve the equation for graviton propagation in a general four dimensional background and find an explicit solution for a zero mass bound state of the graviton. We find that this zero mass bound state is normalizable only if the cosmological constant is strictly zero, thereby providing a dynamical reason for the vanishing of cosmological constant within the context of this model. We also show that the results of Randall and Sundrum can be generalized without any modification to the Schwarzschild background.

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