Title: Diagrammatic boundary calculus for Wilson loop diagrams
|University of Waterloo
There will be a pre-seminar presenting relevant background at the beginning graduate level starting at 1pm.
Abstract: This talk is about a different part of the quantum field theory story than I usually talk about. Wilson loop diagrams can be used to index amplitudes in a theory known as N=4 SYM. Suitably nice Wilson loop diagrams are also associated to positroids. For both mathematical and physical reasons it would be nice to have a diagrammatic understanding of the boundaries of the positroid cells of all co-dimensions. While we do not yet have a full understanding, we can build many boundaries with certain diagrammatic moves.
Joint work with Susama Agarwala and Colleen Delaney.