Product CFTs, gravitational cloning, massive gravitons and the space of gravitational duals
Abstract
The question of graviton cloning in the context of the bulk/boundary correspondence is considered. It is shown that multigraviton theories can be obtained from products of largeN 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 multitrace marginal or relevant perturbations. The geometrical structure of the gravitational duals of such theories is that of product manifolds with their boundaries identified. The calculational formalism is described and the interpretation of such theories is discussed.
 Publication:

Journal of High Energy Physics
 Pub Date:
 November 2006
 DOI:
 10.1088/11266708/2006/11/049
 arXiv:
 arXiv:hepth/0608088
 Bibcode:
 2006JHEP...11..049K
 Keywords:

 High Energy Physics  Theory
 EPrint:
 Latex, 25 pages. (v2) Minor corrections and references added