Interaction Energy of `t Hooft-Polyakov Monopoles
  The dependence of the energies of axially symmetric monopoles of magnetic charges 2 and 3, on the Higgs self-interaction coupling constant, is studied numerically. Comparing the energy per unit topological charge of the charge-2 monopole with the energy of the spherically symmetric charge-1 monopole, we confirm that there is only a repulsive phase in the interaction energy between like monopoles 
B. Kleihaus (1), J. Kunz (2) and D. H. Tchrakian (1) ((1) NUI   Maynooth, Ireland, (2) University Oldenburg, Germany)