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 one repulsive phase in the interaction energy between like monopoles.

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