Potentials between light-light and heavy-light mesons are computed from meson-meson Green's functions in the framework of quenched lattice QCD with Kogut-Susskind fermions Comparisons with a full QCD simulation and a simulation using an O(a2) tree-level and tadpole improved gauge action show that dynamic quarks and lattice discretization errors have no drastic influence Calculations from inverse scattering theory propose a similar shape for KK potentials, whereas a good qualitative agreement with ππ potentials could not be obtained (author)
Potentials between light-light and heavy-light mesons are computed from meson-meson Green's functions in the framework of quenched lattice QCD with Kogut-Susskind fermions. Comparisons with a full QCD simulation and a simulation using an O(a2) tree-level and tadpole improved gauge action show that dynamic quarks and lattice discretization errors have no drastic influence. Calculations from inverse scattering theory propose a similar shape for KK potentials, whereas a good qualitative agreement with ππ potentials could not be obtained.