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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.01420 |
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| _version_ | 1866915658463182848 |
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| author | Ammann, Bernd Dahl, Mattias |
| author_facet | Ammann, Bernd Dahl, Mattias |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_01420 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Space of Dirac-Minimal Metrics is Connected in Dimensions 2 and 4 Ammann, Bernd Dahl, Mattias Differential Geometry 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. |
| title | The Space of Dirac-Minimal Metrics is Connected in Dimensions 2 and 4 |
| topic | Differential Geometry |
| url | https://arxiv.org/abs/2508.01420 |