Soliton description of a baryon in lattice QCD

A way to test the soliton description of a baryon, such as the Skyrme model, directly from lattice QCD is proposed. The idea is to calculate, using lattice QCD Monte Carlo simulation, the appropriate quantum expectation of the relevant operator which corresponds to the quantum version of the soliton solution. The feasibility of this idea is demonstrated in the case of two-dimensional QCD by the good agreement between lattice Monte Carlo simulation data of QCD2 and the classical solution of Wess-Zumino-Witten model with a mass term, which is the analog of the Skyrme model in two dimensions. This calculation can be generalized straightforwardly to the realistic case of four dimensions. (orig.)