Multiple-Trace Operators and Non-Local String Theories
arXiv:hep-th/0105309 · doi:10.1088/1126-6708/2001/08/006
Abstract
We propose that a novel deformation of string perturbation theory, involving non-local interactions between strings, is required to describe the gravity duals of field theories deformed by multiple-trace operators. The new perturbative expansion involves a new parameter, which is neither the string coupling nor the coefficient of a vertex operator on the worldsheet. We explore some of the properties of this deformation, focusing on a special case where the deformation in the field theory is exactly marginal.
21 pages, harvmac big. v2: references added; larger branch of QFT moduli space included; comments on graviton scattering added