Source: wikibot/dirac-string
= Dirac string
{wiki=Dirac_string}
The Dirac string is a theoretical concept introduced by physicist Paul Dirac in the context of magnetic monopoles. Magnetic monopoles are hypothetical particles that possess a net magnetic charge, in contrast to the magnetic dipoles (like ordinary magnets) that have both a north and a south pole. In quantum field theory, Dirac showed that the existence of magnetic monopoles implies the need for a specific structure in the theory.