Monopoles PDF Print E-mail

The magnetic pole was first introduced as an appealing modification of Maxwell’s equations of electromagnetism in order to achieve full symmetry between the electric and magnetic forces. In the early seventies it was found that magnetic poles arise also in theories of nuclear and subnuclear interactions and in Grand Unified Theories. So the magnetic pole is now not an option but a consequence of microphysical theory. Furthermore, the presence of a single magnetic pole in the universe would imply that all the electric charges in the universe are integral multiples of a universal quantum of charge, the charge of the electron providing thus a beautiful raison d’être for one of the most remarkable features of our universe, the quantization of electric charge. The problem is however that magnetic poles have not been experimentally observed. In this sense the story is not totally unlike that of the black hole, that emerged, at the beginning, as an exotic solution of Einstein’s equations, remained unobserved for decades, was then observed and now we have reason to believe that there exist enormous black holes at the center of most of the galaxies, and that moreover they not only happen to be there, but they might be responsible for the very existence of the galaxy. It would not seem to be totally out of the questions to imagine that a similar complete success story is awaiting the magnetic pole and, even more, that it could be related to that of the black hole. With these similarities in mind, we have studied the interaction between the magnetic pole and the black hole to examine what effects could emerge if the missing magnetic poles were hiding inside black holes. We have found so far an interesting consequence, namely that they would set the black holes into rotation.