L^2 curvature and volume renormalization of AHE metrics on 4-manifolds
Abstract
Description
This paper relates the boundary term in the Chern-Gauss-Bonnet formula on 4-manifolds M with the renormalized volume V, as defined in the AdS/CFT correspondence, for asymptotically hyperbolic Einstein metrics on M. In addition, we compute and discuss the differential or variation dV of V, or equivalently the variation of the L^2 norm of the Weyl curvature, on the space of such Einstein metrics.
15 pages, several corrections made. To appear in Math. Research Letters
15 pages, several corrections made. To appear in Math. Research Letters