Forces between composite particles in QCD
  Starting from the meson-meson Green function in 3+1 dimensional quenched lattice QCD we calculate potentials between heavy-light mesons for various light-quark mass parameters. For the valence quarks we employ the staggered scheme. The resulting potentials turn out to be short ranged and attractive. A comparison with a tadpole improved action for the gauge fields is presented. 
H.R. Fiebig (Physics Department, FIU, Miami), A. Mihaly (Department of   Theoretical Physics, Lajos Kossuth University, Debr...