2 papers
math-ph2026
Augmentation and Bulk Edge Correspondence for one dimensional aperiodic tight binding operators
Johannes Kellendonk, Lorenzo Scaglione
We consider a particular class of 1D aperiodic models with the aim to understand how their internal degrees of freedom contribute to their topological invariants and the possible r…
math-ph2025
The role of self-adjoint extensions in the bulk-edge correspondence
Johannes Kellendonk, Tom Stoiber
We investigate the role of self-adjoint extensions in the bulk-edge correspondence for topological insulators. While the correspondence is well understood in discrete models with s…