New boundary central charges from holographic defects
ABSTRACT
This talk is about the computation of new boundary central charges from the observables of holographic defect CFTs. The defect CFTs are described by (codimension-1) domain wall versions of N = 4 SYM that are holographically dual to the D3-D5 and the D3-D7 probe-brane systems. Starting from the explicit expression of the improved energy-momentum tensor of N = 4 SYM, we will determine its two and three-point functions in the presence of the domain walls and extract the boundary central charges, to leading order in perturbation theory. In the same process, we will also determine the two and three-point function of the corresponding displacement operators.