On AdS/CFT without Massless Gravitons

Understand

We point out that it is possible to define CFT duals to AdS theories with massive gravitons only.

• This is achieved by considering the product of two or more CFTs on the boundary, each possessing a large-N expansion and a corresponding bulk dual.
• It is possible to couple the CFTs through a marginal perturbation that makes all but one of the bulk gravitons massive.
• In the infinite-N limit for one of the CFTs the massless graviton decouples.