-
HEP-Theory Group, Milano-Bicocca, talks
U2, 5017
Title: Monopoles, Dirac Strings and Generalised Symmetries
Abstract: Dirac’s quantum theory of magnetic monopoles requires a Dirac string attached to each monopole, and it is important that the field equations do not depend on the positions of the Dirac strings, provided that they comply with the Dirac veto: they must not intersect the worldliness of electrically charged particles. This theory is revisited and it is shown that it has generalised symmetries related to the freedom of moving the Dirac strings. The Dirac veto is interpreted as an anomaly and the possibility of cancelling the anomaly by embedding in a higher-dimensional theory will be discussed. This talk is based on arXiv:2411.18741.
Argomento