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math.DG2015★ 5 cited
A Universal Spinor Bundle and the Einstein-Dirac-Maxwell Equation as a Variational Theory
Olaf Müller, Nikolai Nowaczyk
Not only the Dirac operator, but also the spinor bundle of a pseudo-Riemannian manifold depends on the underlying metric. This leads to technical difficulties in the study of probl…
math.DG2015
Compact Lorentzian holonomy
Manuel Gutiérrez, Olaf Müller
We consider (compact or noncompact) Lorentzian manifolds whose holonomy group has compact closure. Among other results, we obtain that this property is equivalent to admitting a pa…