14.01.2026, 14:00 - 15:15
– Campus Golm, Building 9, Room 2.22 and via Zoom
Institutskolloquium
Getting to the chore of things
Christian Mercat (Claude Bernard University Lyon 1)
Sebastian Hannes
On a globally hyperbolic spacetime the Lorentzian Dirac Operator under APS boundary conditions is Fredholm and its kernel consists of smooth spinors. We will discuss a certain class of boundary conditions that are obtained by continuous deformations of the APS conditions. We will see under which assumptions these boundary conditions give again rise to a Fredholm operator and look at an approach to finding deformations such that the kernel again consists of smooth spinors.