The Adjoint Vacuum Sector of Massless QCD2

A. Abrashkin; Y. Frishman; J. Sonnenschein

doi:10.1016/j.nuclphysb.2004.10.019

paper

The Adjoint Vacuum Sector of Massless QCD2

arXiv:hep-th/0510167 · doi:10.1016/j.nuclphysb.2004.10.019

Abstract

We consider a "one current" state, obtained by appication of a color current on the "adjoint" vacuum, in $QC D_{2}$ , with quarks in fundamental representation. The quarks are taken to be massless. The theory on the light-front can be "currentized", namely formulated in terms of currents only. The adjoint vacuum is obtained by applying a current derivative, at zero momentum, on the singlet vacuum. In general the "one current" states are not eigenstates of $M^{2} = 2 P^{+} P^{-}$ , except in the large $N_{f}$ limit. Problems with infra-red regularizations are pointed out. Connection to fermionic structure is made.

Talk presented by Y. Frishman at the Light Cone Workshop in Cairns, Australia, July 2005