147 citations · 733 across the 37 of their papers we have counts for
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math-ph2015★ 17 cited
A rigorous geometric derivation of the chiral anomaly in curved backgrounds
Christian Baer, Alexander Strohmaier
We discuss the chiral anomaly for a Weyl field in a curved background and show that a novel index theorem for the Lorentzian Dirac operator can be applied to describe the gravitati…
math.DG2015★ 48 cited
An index theorem for Lorentzian manifolds with compact spacelike Cauchy boundary
Christian Baer, Alexander Strohmaier
We show that the Dirac operator on a compact globally hyperbolic Lorentzian spacetime with spacelike Cauchy boundary is a Fredholm operator if appropriate boundary conditions are i…