Conformal symmetry of brane world effective actions

TL;DR

This paper derives the low-energy effective action for brane worlds emphasizing conformal invariance and enhances it using the AdS/CFT correspondence for brane pairs with different tensions.

Contribution

It provides a straightforward derivation of the effective action and applies AdS/CFT to improve it for brane pairs with positive and negative tension.

Findings

Effective action derived with conformal invariance

Improved effective action using AdS/CFT correspondence

Applicable to brane pairs with different tensions

Abstract

A simple derivation of the low-energy effective action for brane worlds is given, highlighting the role of conformal invariance. We show how to improve the effective action for a positive- and negative-tension brane pair using the AdS/CFT correspondence.