Geometric Langlands conjecture for generic normalized eigensheaves

Let XX be the curve and GG the reductive group of the paper. Let EE be a Gˇ\check{G}-local system on XX, and put W=VEγW=V^{\gamma}_E. Assume that WW is irreducible and that whenever a Gˇ\check{G}-local system EE' satisfies VEγVEγV^{\gamma}_{E'}\simeq V^{\gamma}_E, one has EEE'\simeq E. Let dGd_G be the dimension shift used in the paper, let π:YdBunGd\pi:{\cal Y}_d\to\operatorname{Bun}^d_G be the projection, let PW,ψd\mathcal P^d_{W,\psi} be the indicated perverse-sheaf complex, and let DK\mathbb D K denote Verdier duality. Geometric Langlands conjecture. There exists N>0N>0 and, for every dNd\geq N, a nonempty open substack UdBunGdU_d\subset\operatorname{Bun}^d_G and an EE-Hecke eigensheaf KK on BunG\operatorname{Bun}_G such that both KK and DK\mathbb D K are generic normalized; π!PW,ψdUd\pi_!\mathcal P^d_{W,\psi}|_{U_d} is in perverse degrees at most ddGd-d_G, the map from the source induces an isomorphism HddG(π!PW,ψd)KUd\mathcal H^{d-d_G}(\pi_!\mathcal P^d_{W,\psi})\simeq K|_{U_d} on the top perverse cohomology sheaves; and KK is irreducible on every BunGd\operatorname{Bun}^d_G and does not vanish over UdU_d. This predicts the existence and generic behavior of the desired geometric Langlands eigensheaf under the stated irreducibility and rigidity condition. The source gives no resolution, so the conjecture remains open.

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Primary source

Sergey Lysenko, “On automorphic sheaves on Bun_G”, arXiv:math/0211067 (2003).

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