't Hooft–Polyakov monopole

In theoretical physics, the 't Hooft–Polyakov monopole is a topological soliton similar to the Dirac monopole but without the Dirac string. It arises in the case of a Yang–Mills theory with a gauge group G {\displaystyle G} , coupled to a Higgs field which spontaneously breaks it down to a smaller group H {\displaystyle H} via the Higgs mechanism.