Spectrum calculations in lattice gauge theory using Wilson's fermion method

Using a lattice fermion method due to Wilson we compute mass ratios for the low-lying hadrons and the nucleon $g_A$ factor within the context of the lattice Hamiltonian formulation of quantum chromodynamics. This lattice fermion method breaks chiral symmetry completely, but by adjusting a parameter we are able to obtain a massless pion in the continuum (lattice spacing →0) limit. The computed $\rho$ and $\omega$ masses are quite realistic and unaffected by the choice of the parameter, and the axial-vector charge of the nucleon is slightly better than its static SU(6) value. Higher-order calculations using this formulation of the lattice theory appear promising and feasible.