Conformal Renormalization and Energy Functionals in AdS gravity

by Rodrigo Olea (UNAB, Chile )




Within a holographic framework, we explore the physical consequences of embedding Einstein-AdS gravity in Conformal Gravity in four and six dimensions. In the bulk, the procedure is equivalent to Holographic Renormalization, as the Einstein-AdS action appears augmented by the correct boundary counterterms. In codimension-2 surfaces, 4D Conformal Gravity induces a conformal invariant which, for given conditions on the ambient space and the surface itself, reproduces different functionals: Renormalized Area, Willmore Energy and Reduced Hawking Mass. In particular, it also provides a more geometric approach to the computation of Holographic Entanglement Entropy for that case.