Product CFTs, gravitational cloning, massive gravitons and the space of gravitational duals

✍ Scribed by E. Kiritsis

• Book ID: 105357637
• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 126 KB
• Volume: 55
• Category: Article
• ISSN: 0015-8208
• DOI: 10.1002/prop.200610387

✦ Synopsis

Abstract

The question of graviton cloning in the context of the bulk/boundary correspondence is considered. It is shown that multi‐graviton theories can be obtained from products of large‐N CFTs. No more than one interacting massless graviton is possible. There can be however, many interacting massive gravitons that can be arbitrarily light. This is achieved by coupling CFTs via multi‐trace marginal or relevant perturbations. The geometrical structure of the gravitational duals of such theories is that of product manifolds with their boundaries identified. The interpretation of such theories is discussed. Potential applications to massive gravity and cosmology are briefly suggested.