343 citations · 1.4k across the 38 of their papers we have counts for
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math-ph2025
Detecting local topology with the spectral localizer
Alexander Cerjan, Hermann Schulz-Baldes
The spectral localizer is a predictive framework for the computation of topological invariants of natural and artificial materials. Here, three crucial improvements on the criterio…
math-ph2023★ 24 cited
Spectral localizer for line-gapped non-hermitian systems
Alexander Cerjan, Lars Koekenbier, Hermann Schulz-Baldes
Short-ranged and line-gapped non-hermitian Hamiltonians have strong topological invariants given by an index of an associated Fredholm operator. It is shown how these invariants ca…