Categorical local Langlands conjecture for elliptic parameters

Let GG be quasisplit over EE, fix a Whittaker datum, and assume that the connected split center of GG is trivial. Let φ\varphi be an elliptic LL-parameter, let SφS_\varphi be its component group, and let CφC_\varphi denote the corresponding spectral component. Elliptic categorical local Langlands conjecture. There is a unique generic supercuspidal representation π\pi of G(E)G(E) with LL-parameter φπ=φ\varphi_\pi=\varphi, and the functor

Perf([SpecQ/Sφ])DlisCφ(BunG,Q)ω,WActW(π)\operatorname{Perf}([\operatorname{Spec}\overline{\mathbb Q}_\ell/S_\varphi])\to\mathcal D_{\mathrm{lis}}^{C_\varphi}(\operatorname{Bun}_G,\overline{\mathbb Q}_\ell)^\omega, \qquad W\longmapsto\operatorname{Act}_W(\pi)

is an equivalence. Consequently, irreducible supercuspidal representations of some Gb(E)G_b(E) with parameter φ\varphi are in bijection with irreducible representations of SφS_\varphi, and the equivalence is tt-exact for the standard tt-structures. This is the elliptic specialization of the categorical local Langlands conjecture, with the additional tt-exactness assertion.

Sources & referencesView supporting material

Primary source

Laurent Fargues and Peter Scholze, “Geometrization of the local Langlands correspondence”, arXiv:2102.13459 (2024).

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