Geometry & Topology Seminar

John Huerta, University of Lisbon

"Bundle gerbes on Lie supergroups"

Bundle gerbes are analogues of line bundles important for conformal field theory, anomalies, and obstruction theory. Among bundle gerbes, a central role is played by the basic bundle gerbe, an essentially unique gerbe on any compact, simple and simply-connected Lie group. In this talk, we describe our work constructing the basic bundle gerbe for a large family of simple Lie supergroups, and show how the basic gerbe on a Lie supergroup decomposes into a tensor product of gerbes on the underlying Lie group and an auxiliary 2-form. 

This seminar will be held jointly online and in person:

• Zoom link: https://zoom.us/j/93859138328; Passcode: 436044
• Room: MC 5417