Nonperturbative infrared multiplicative renormalizability of   two-dimensional covariant gauge QCD
  A nonperturbative approach to two-dimensional covariant gauge QCD is presented in the context of the Schwinger-Dyson equations and the corresponding Slavnov-Taylor identities. The distribution theory, complemented by the dimensional regularization method, is used in order to treat correctly the infrared singularities which inevitably appear in the theory. By working out the multiplicative renormalization program we remove them from the theory on a general ground and in a self-consistent way, proving thus the infrared multiplicative renormalizability of two-dimensional QCD within our approach. We also show explicitly how to formulate the bound-state problem and the Schwinger-Dyson equations for the gluon propagator and the triple gauge field proper vertex, all free from the infrared singularities. 
V. Gogohia (HAS, Rmki, Kfki), Gy. Klige (HAS, Rmki, Kfki), J. Nyiri   (Has, Rmki, Kfki)