Description
Branes in geometric engineering and holography have a striking connection with generalized global symmetries. In particular, non-trivial aspects of non-invertible symmetries are encoded in brane physics. In this talk, I will discuss the brane origin of condensation defects and generalized charges. Hanany-Witten brane configurations in string theory play a crucial role in the analysis. The general discussion is illustrated with examples from holography and geometric engineering. As an application, I will consider duality/triality defects in 4d and show how Hanany-Witten transitions provide a powerful diagnostic of their intrinsic/non-intrinsic character.
