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The (1+1)-dimensional SU}(N) Yang-Mills Lagrangian, with bare mass M, andgauge coupling e, naively describes gluons of mass M. In fact, renormalizationforces M to infinity. The system is in a confined phase, instead of a Higgsphase. The spectrum of this diverging-bare-mass theory contains particles offinite mass. There are an infinite number of physical particles, which areconfined hadron-like bound states of fundamental colored excitations. Theseparticles transform under irreducible representations of the global subgroup ofthe explicitly-broken gauge symmetry. The fundamental excitations are those ofthe SU(N) X SU(N) principal chiral sigma model, with coupling e/M. We find themasses of meson-like bound states of two elementary excitations. This is doneusing the exact S matrix of the sigma model. We point out that thecolor-singlet spectrum coincides with that of the weakly-coupled anisotropicSU(N) gauge theory in 2+1 dimensions. We also briefly comment on how thespectrum behaves in the 't Hooft limit, with N approaching infinity.

Dynamical Mass Reduction in the Massive Yang-Mills Spectrum in 1+1 dimensions