Speaker
Antonio Santaniello
Description
One of the many unexpected byproducts of String Theory is the discovery of interesting, interacting Quantum Field Theories in a five-dimensional spacetime. In this talk I will discuss differences and analogies with the four-dimensional world, focusing in particular on gauge theories. These theories admit a universal U(1) symmetry, that is the five-dimensional incarnation of the theta-term of four-dimensional gauge theories. I will present novel results on the action of such symmetry on extended operators, associated to magnetically charged excitations analogous to magnetic monopoles.