English

$G$-gerbes on perfectoid spaces

Algebraic Geometry 2026-04-29 v2

Abstract

Let KK be a complete non-archimedean field over Qp\mathbb{Q}_p, GG be a rigid group over KK, and XX be a perfectoid space over KK. We consider the natural morphism of sites ν:XvXeˊt\nu: X_v \to X_{\mathrm{\acute{e}t}}. It is known from work of Heuer that the direct image functor ν\nu_* induces an equivalence of the categories of GG-torsors. In this article, we show that there is an equivalence of 2-categories of GG-gerbes on these two topologies.

Keywords

Cite

@article{arxiv.2511.15126,
  title  = {$G$-gerbes on perfectoid spaces},
  author = {Xiaohuan Long and Yibin Wang and Xiangdong Wu and Ru Yi},
  journal= {arXiv preprint arXiv:2511.15126},
  year   = {2026}
}

Comments

Refined proofs for Prop. 2.9 and Lemma 2.14. Added Remarks on non-perfectoid cases

R2 v1 2026-07-01T07:44:43.735Z