English

Geometrization of the local Langlands correspondence

Representation Theory 2024-11-28 v4 Algebraic Geometry Number Theory

Abstract

Following the idea of [Far16], we develop the foundations of the geometric Langlands program on the Fargues--Fontaine curve. In particular, we define a category of \ell-adic sheaves on the stack BunG\mathrm{Bun}_G of GG-bundles on the Fargues--Fontaine curve, prove a geometric Satake equivalence over the Fargues--Fontaine curve, and study the stack of LL-parameters. As applications, we prove finiteness results for the cohomology of local Shimura varieties and general moduli spaces of local shtukas, and define LL-parameters associated with irreducible smooth representations of G(E)G(E), a map from the spectral Bernstein center to the Bernstein center, and the spectral action of the category of perfect complexes on the stack of LL-parameters on the category of \ell-adic sheaves on BunG\mathrm{Bun}_G.

Keywords

Cite

@article{arxiv.2102.13459,
  title  = {Geometrization of the local Langlands correspondence},
  author = {Laurent Fargues and Peter Scholze},
  journal= {arXiv preprint arXiv:2102.13459},
  year   = {2024}
}

Comments

356 pages, v4: accepted version. v3: improved discussion of spectral action with integral coefficients (now also applying in the usual Betti setting), including new results (Theorem VIII.0.3) on preservation of good filtrations ("Donkin subgroups"). Comments welcome!