English

Expanding Soliton Models for K\"ahler-Ricci Flow Near Conical Singularities

Differential Geometry 2026-05-28 v2 Analysis of PDEs

Abstract

Let (Y,g0)(Y,g_0) be a compact analytic space with a finite number of singular points, where the metric at each singular point is modelled on a K\"ahler cone with smooth canonical model. We show that the K\"ahler-Ricci flow with such initial data satisfies a C/tC/t curvature bound, and that the flow near each singular point is modelled on the unique K\"ahler-Ricci expander asymptotic to the corresponding cone. Our motivation is to give a geometric description of the K\"ahler--Ricci flow emerging from singularities arising in the analytic minimal model program.

Keywords

Cite

@article{arxiv.2604.04223,
  title  = {Expanding Soliton Models for K\"ahler-Ricci Flow Near Conical Singularities},
  author = {Longteng Chen and Max Hallgren and Lucas Lavoyer},
  journal= {arXiv preprint arXiv:2604.04223},
  year   = {2026}
}

Comments

Removed quasi-Calabi-Yau assumption. Modified gluing procedure