Dressing bulk fields in AdS3

Abstract

Abstract We study a set of CFT operators suitable for reconstructing a charged bulk scalar field ϕ in AdS3 (dual to an operator O $$ \mathcal{O} $$ of dimension ∆ in the CFT) in the presence of a conserved spin-n current in the CFT. One has to sum a tower of smeared non-primary scalars ∂ + m J m $$ {\partial}_{+}^m{J}^{(m)} $$ , where J (m) are primaries with twist ∆ and spin m built from O $$ \mathcal{O} $$ and the current. The coefficients of these operators can be fixed by demanding that bulk correlators are well-defined: with a simple ansatz this requirement allows us to calculate bulk correlators directly from the CFT. They are built from specific polynomials of the kinematic invariants up to a freedom to make field redefinitions. To order 1/N this procedure captures the dressing of the bulk scalar field by a radial generalized Wilson line.

Keywords

• AdS-CFT Correspondence
• Models of Quantum Gravity