Kim's conjecture on local constituents of residual Arthur packets

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Let GG be a group of type EnE_n, let G∨G^{\vee} be its dual group, and let ψ:SL2(C)→G∨\psi:SL_2(\mathbb{C})\to G^{\vee} be an Arthur parameter such that its global Arthur packet Πψ\Pi_\psi contains a residual representation of GG. Let O\mathcal{O} be the nilpotent orbit of G∨G^{\vee} associated with ψ\psi. For a place vv, let Πψvres⊆Πψv\Pi_{\psi_v}^{\mathrm{res}}\subseteq\Pi_{\psi_v} consist of the representations occurring as local constituents of irreducible residual representations in the residual spectrum attached to the trivial character of T(A)/T(F)T(\mathbb{A})/T(F), and let Springer⁡(O)\operatorname{Springer}(\mathcal{O}) denote the image of the Springer correspondence.

Kim's conjecture. The parameter ψ\psi is associated with a distinguished orbit O\mathcal{O} of G∨G^{\vee}, and

Πψvres=image⁡(Springer⁡(O))\Pi_{\psi_v}^{\mathrm{res}}=\operatorname{image}\bigl(\operatorname{Springer}(\mathcal{O})\bigr)

under the local Arthur correspondence.

This conjecture predicts which members of the local Arthur packet occur in residual representations attached to the trivial character. The supplied text gives no resolution status.

References

Primary source

Hezi Halawi and Avner Segal, “Poles, Residues and Siegel-Weil Identities of Degenerate Eisenstein Series on Split Exceptional Groups of Type E_n”, arXiv:2312.01686 (2023).

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