Adjoint QCD2 and the non-abelian Schwinger mechanism

Massless Majorana fermions in the adjoint representation of SU(Nc) are expected to screen gauge interactions in 1+1 dimensions, analogous to a similar Higgs phenomena known for 1+1-dimensional U(1) gauge theory with massless fundamental fermions (Schwinger model). Using the light-cone Tamm-Dancoff formalism and large-Nc limit, a non-abelian analogue of the Schwinger boson is shown to be responsible for the screening between heavy test charges. This adjoint boson does not exist as a physical state, but boundstates are built entirely from this particle.