Nucleon-meson vertex functions and isobar-meson vertex functions from the quark potential model

In this paper, we have derived a nonrelativistic transition potential Vsub(q-qq anti q) from one-gluon-exchange theory and calculated the matrix elements of the nucleon-meson vertices and isobar-meson vertices from this transition potential by using the generator coordinate method. The coupling constants of the vertices are in agreement with the experimental data and the form factors of the vertices are much like gaussian functions. (orig.)