AdS/CFT and Randall-Sundrum Model Without a Brane

Details AdS/CFT and Randall-Sundrum Model Without a Brane AdS/CFT and Randall-Sundrum Model Without a Brane

2000-10-17

arxiv.org/abs/hep-th/0010141v3

JHEP 0105:030,2001

Physics

High Energy Physics

High Energy Physics - Theory

Comments and references added, to apear in JHEP

Scientific paper

We reformulate the Randall-Sundrum (RS) model on the compactified AdS by adding a term proportional to the area of the boundary to the usual gravity action with a negative cosmological constant and show that gravity can still be localized on the boundary without introducing singular brane sources. The boundary conditions now follow from the field equations, which are obtained by letting the induced metric vary on the boundary. This approach gives similar modes that are obtained in [1] and clarifies the complementarity of the RS and the AdS/CFT pictures. Normalizability of these modes is checked by an inner-product in the space of linearized perturbations. The same conclusions hold for a massless scalar field in the bulk.

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