PP-wave and non-supersymmetric gauge theory

We extend the pp-wave correspondence to a non supersymmetric example. The model is the type-0B string theory on the pp-wave R-R background. We explicitly solve the model and give the spectrum of physical states. The fleld theory counterpart is given by a sector of the large N SU(N)£SU(N) CFT living on a stack of N electric and N magnetic D3-branes. The relevant efiective coupling constant is gefi = gsN=J 2 . The string theory has a tachyon in the spectrum, whose light-cone energy can be exactly computed as a function of gefi. We argue that the perturbative analysis in gefi in the dual gauge theory is reliable, with corrections of non perturbative type. We flnd a precise state/operator map, showing that the flrst perturbative corrections to the anomalous dimensions of the operators have the behavior expected from the string analysis.