L2-index of the Dirac operator of generalized Euclidean Taub-NUT metrics
Sergiu Moroianu, Mihai Visinescu
Abstract
We compute the axial anomaly for the Taub-NUT metric on R4. We show that the axial anomaly for the generalized Taub-NUT metrics introduced by Iwai and Katayama is finite, although the Dirac operator is not Fredholm. We show that the essential spectrum of the Dirac operator is the whole real line.
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