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Non-conformally flat bulk spacetime and the 3-brane world

Parampreet Singh, Naresh Dadhich

hep-tharXiv:hep-th/0104174

Abstract

We show that for non-conformally flat bulk spacetime, there exist no bound modes for zero mass graviton on the 3-brane. The brane world model is therefore unstable for the bulk spacetime being different from the conformally flat anti - de Sitter space.

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