English

Asymptotically cylindrical steady K\"ahler-Ricci solitons

Differential Geometry 2021-08-17 v2

Abstract

Let DD be a compact K\"ahler manifold with trivial canonical bundle and Γ\Gamma be a finite cyclical group of order mm acting on C×D\mathbb{C} \times D by biholomorphisms, where the action on the first factor is generated by rotation of angle 2π/m2\pi /m. Furthermore, suppose that ΩD\Omega_D is a trivialisation of the canonical bundle such that Γ\Gamma preserves the holomorphic form dzΩDdz \wedge \Omega_D on C×D\mathbb C \times D, with zz denoting the coordinate on C\mathbb{C}. The main result of this article is the construction of new examples of gradient steady K\"ahler-Ricci solitons on certain crepant resolutions of the orbifolds (C×D)/Γ\left( \mathbb{C}\times D \right) / \Gamma. These new solitons converge exponentially to a Ricci-flat cylinder R×(S1×D)/Γ\mathbb{R} \times(\mathbb{S}^1 \times D) / \Gamma.

Keywords

Cite

@article{arxiv.2103.12629,
  title  = {Asymptotically cylindrical steady K\"ahler-Ricci solitons},
  author = {Johannes Schäfer},
  journal= {arXiv preprint arXiv:2103.12629},
  year   = {2021}
}

Comments

64 pages; results unchanged, but details added to computations in Section 5