2 papers
math.KT2024
Dirac-Schrödinger operators, index theory, and spectral flow
Koen van den Dungen
In this article we study generalised Dirac-Schrödinger operators in arbitrary signatures (with or without gradings), providing a general KK-theoretic framework for the study of ind…
math.KT2023
Generalised Dirac-Schrödinger operators and the Callias Theorem
Koen van den Dungen
We consider generalised Dirac--Schrödinger operators, consisting of a self-adjoint elliptic first-order differential operator D with a skew-adjoint 'potential' given by a (suitable…