Laumon's conjecture on loose Hecke eigensheaves

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Let GG be a reductive group and let XX be a smooth proper curve. A loose Hecke eigensheaf is an object \CF∈\Dmod(\BunG)\CF\in \Dmod(\Bun_G) such that for every V∈\Rep(\cG)V\in \Rep(\cG) there are an object EV∈\Dmod\onlisse(X)E_V\in \Dmod_{\on{lisse}}(X) and an object \CF′∈\Dmod(\BunG)\CF'\in \Dmod(\Bun_G) with

H(V,\CF)≃\CF′⊗EV.H(V,\CF)\simeq \CF'\otimes E_V.

Laumon's conjecture on loose Hecke eigensheaves. A loose Hecke eigensheaf has a nilpotent singular support. This is presented as a special case of the preceding inclusion conjecture and as a version of a conjecture first proposed by G. Laumon for actual Hecke eigensheaves; the source does not state that it is resolved.

References

Primary source

D. Gaitsgory, D. Kazhdan, N. Rozenblyum and Y. Varshavsky, “A toy model for the Drinfeld-Lafforgue shtuka construction”, arXiv:1908.05420 (2022).

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