Magnetic Monopoles

“One would be surprised if Nature had made no use of it.” P.A.M. Dirac According to some dictionaries, one meaning of the notion of “beauty” is “symmetry”. Probably, beauty is not entirely “in the eye of the beholder”. It seemstoberelatedtothesymmetryoftheobject.Fromaphysicalviewpoint, this de?nition is very attractive: it allows us to describe a central concept of theoretical physics over the las...