Exotic baryons in two-dimensional QCD

Two-dimensional QCD has often been used as a laboratory for studying the fullfour-dimensional theory, providing, for example, an explicit realization ofbaryons as solitons. We review aspects of conventional baryons intwo-dimensional QCD, including the classical and quantum contributions to theirmasses. We then discuss the spectrum of exotic baryons in two-dimensional QCD,commenting on the solitonic radius inferred from the excitation spectrum aswell as the two-dimensional version of the Goldberger-Treiman relation relatingmeson couplings to current matrix elements. Two-dimensional QCD provides strongoverall support to the chiral-soliton picture for the structure of normal andexotic baryons in four dimensions.Comment: 15 pages latex, no figure