Winding numbers, spectral flow and relative edge invariants for unbounded operators - Part 3

par Johannes Kellendonk

mardi 14 nov. 2023, 11:30 → 12:30 Europe/Paris

salle 125 (Bâtiment Braconnier)

The naive Hatsugai formula which ought to relate bulk with edge topological invariants is violated when using unbounded operators like the Dirac operator to describe the insulator. I will propose some ideas on how to fix this.