The space of Dirac-minimal metrics is connected in dimensions 2 and 4
by
Bernd Ammann, Mattias Dahl
The space of Dirac-minimal metrics is connected in dimensions 2 and 4,
Preprint version (pdf)
Abstract
Let M be a closed connected spin manifold. Index theory provides a topological lower bound on the dimension of the kernel of the Dirac operator which depends on the choice of Riemannian metric. Riemannian metrics for which this bound is attained are called Dirac-minimal. We show that the space of Dirac-minimal metrics on M is connected if M is of dimension 2 or 4.
Back to my Homepage
Bernd Ammann, Impressum und Datenschutzerklärung
Last update of this page 02.08.2025
The paper was originally written on 2.8.2025