The spectrum of states with one current acting on the adjoint vacuum of massless image Original Research Article

We consider a “one current” state, which is obtained by the application of a color current on the “adjoint” vacuum. This is done in image, with the underlying quarks in the fundamental representation. The quarks are taken to be massless, in which case the theory on the light-front can be “currentized”, namely, formulated in terms of currents only. The adjoint vacuum is shown to be the application of a current derivative, at zero momentum, on the singlet vacuum. We apply the operator image on these states and find that in general they are not eigenstates of image apart from the large image limit. Problems with infra-red regularizations are pointed out. We discuss the fermionic structure of these states.