Mixing scenarios for lattice string breaking

We present some simple scenarios for string breaking on the lattice based on a crude strong coupling model introduced previously. We review the dependence of the model on lattice spacing and extend it to include degenerate dynamical quarks and also meson exchange diagrams. A comparison is made between quenched and unquenched calculations. We examine string breaking in the presence of a static quark-diquark system, a situation that is specific to SU(3).