English

Yamabe Invariants and the $\mathrm{Pin}^-(2)$-monopole Equations

Differential Geometry 2020-09-22 v2

Abstract

We compute the Yamabe invariants for a new infinite class of closed 44-dimensional manifolds by using a "twisted" version of the Seiberg-Witten equations, the Pin(2)\mathrm{Pin}^-(2)-monopole equations. The same technique also provides a new obstruction to the existence of Einstein metrics or long-time solutions of the normalised Ricci flow with uniformly bounded scalar curvature.

Keywords

Cite

@article{arxiv.1505.05948,
  title  = {Yamabe Invariants and the $\mathrm{Pin}^-(2)$-monopole Equations},
  author = {Masashi Ishida and Shinichiroh Matsuo and Nobuhiro Nakamura},
  journal= {arXiv preprint arXiv:1505.05948},
  year   = {2020}
}

Comments

14 pages

R2 v1 2026-06-22T09:39:14.485Z