TL;DR
This paper develops a method to compute correlation functions in AdS/CFT by flowing through theories with different extra-dimensional sizes, applicable to Randall-Sundrum models and beyond.
Contribution
It extends previous formalism to include brane-localized actions and generalizes to various backgrounds without needing explicit wave-equation solutions.
Findings
Provides a systematic way to include brane actions in holographic calculations.
Applicable to Randall-Sundrum models with one or two branes.
Does not require explicit solutions of wave equations.
Abstract
We extend the formalism introduced in the paper hep-th/0209050 to compute correlation functions in the AdS/CFT correspondence. We show how the on-shell action of a scalar field in a compactification of AdS space can be obtained by flowing in the space of (non-local) theories with different sizes of the extra-dimension. Our method is relevant in particular for holographic computations in the Randall-Sundrum scenario with one or two branes and it allows the inclusion of brane-localized actions in a systematic way. The method can also be generalized to other backgrounds and does not rely on explicit knowledge of the solutions of the wave-equations.
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