The development of Relativistic Quantum Field Theory started in 1932 as a natural
extension of Quantum Mechanics to the relativistic domain [1]. The work of Feynman in the …

We review two-dimensional QCD. We start with the field theory aspects since't Hooft's 1 N
expansion, arriving at the non-Abelian bosonization formula, coset construction and gauge …

Abstract We study (1+ 1) dimensional gauge theories [with SU (N) and diagonal SU (N) color
symmetry] using the functional integral method. We construct an effective lagrangian by …

A comprehensive survey of the use of the Liouville (and super-Liouville) equation in (super)
string theory outside the critical dimension, and of the complementary approach based on …

Abstract The {U (1)} n Schwinger model is shown to have a hidden global SU (n) invariance
where the fermion fields are coupled to n 2− 1 vector fields forming the adjoint multiplet. Of …

We consider bosonized QCD2, and prove that after one rewrites the theory in terms of gauge-
invariant fields, there exists an integrability condition that is valid for the quantum theory as …

The path-integral method of solving two-dimensional QED in 1+ 1 dimensions with massless
fermions is applied in a systematic way to two-dimensional quantum chromodynamics (QC …

We construct composite operators in two-dimensional bosonized QCD, which obey a W∞
algebra, and discuss their relation to analogous objects recently obtained in the fermionic …

Two-dimensional gauge theories with diagonal SU (N) color symmetry are analyzed in the
limit of strong coupling using bosonization techniques. A spectrum of heavy mesons is found …

In the bosonized version of two-dimensional theories nontrivial boundary conditions
(topology) play a crucial role. They are inevitable if one wants to describe nonsinglet states …