Invertible Dirac operators and handle attachments on manifolds with boundary

Details Invertible Dirac operators and handle attachments on manifolds with boundary Invertible Dirac operators and handle attachments on manifolds with boundary

2012-03-16

arxiv.org/abs/1203.3637v1

Mathematics

Differential Geometry

Scientific paper

For spin manifolds with boundary we consider Riemannian metrics which are product near the boundary and are such that the corresponding Dirac operator is invertible when half-infinite cylinders are attached at the boundary. The main result of this paper is that these properties of a metric can be preserved when the metric is extended over a handle of codimension at least two attached at the boundary. Applications of this result include the construction of non-isotopic metrics with invertible Dirac operator, and a concordance existence and classification theorem.

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