276 citations · 1.2k across the 79 of their papers we have counts for
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Z_2 indices and factorization properties of odd symmetric Fredholm operators
Hermann Schulz-Baldes
A bounded operator on a separable, complex Hilbert space is said to be odd symmetric if where is a real unitary satisfying and denotes the transp…
Localization and Chern numbers for weakly disordered BdG operators
Maxim Drabkin, Giuseppe De Nittis, Hermann Schulz-Baldes
After a short discussion of various random Bogoliubov-de Gennes (BdG) model operators and the associated physics, the Aizenman-Molchanov method is applied to prove Anderson localiz…
Krein signatures of transfer operators for half-space topological insulators
Hermann Schulz-Baldes, Carlos Villegas-Blas
We propose a complementary point of view on the topological invariants of two-dimensional tight-binding models restricted to half-spaces. The transfer operators for such systems ar…
The density of surface states as the total time delay
Hermann Schulz-Baldes
For a scattering problem of tight-binding Bloch electrons by a weak random surface potential, a generalized Levinson theorem is put forward showing the equality of the total densit…