Abstract
We extend several classical eigenvalue estimates for Dirac operators on compact manifolds to noncompact, even incomplete manifolds. This includes Friedrich’s estimate for manifolds with positive scalar curvature as well as the author’s estimate on surfaces.
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Bär, C. Spectral bounds for Dirac operators on open manifolds. Ann Glob Anal Geom 36, 67–79 (2009). https://doi.org/10.1007/s10455-008-9149-1
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DOI: https://doi.org/10.1007/s10455-008-9149-1
Keywords
- Dirac operators
- Point spectrum
- Continuous spectrum
- Discrete spectrum
- Essential spectrum
- Killing spinor
- Friedrich inequality
- Lichnerowicz inequality