The orbit-method quantization conjecture for nilpotent orbit covers

Let GG be a complex simple Lie group with Lie algebra g\mathfrak{g}, and let KK be a maximal compact subgroup of GG with complexification KCK_{\mathbb{C}}. For a nilpotent orbit O\mathcal{O}, let R(O)R(\mathcal{O}) be its ring of regular functions. For eeinOe ein\mathcal{O}, let GeG_e be its isotropy group, let (Ge)0(G_e)^0 be the identity component, and define A(O)=Ge/(Ge)0A(\mathcal{O})=G_e/(G_e)^0. For an irreducible representation ρ\rho of A(O)A(\mathcal{O}), let R(O,ρ)R(\mathcal{O},\rho) denote the global sections of the GG-equivariant bundle G×GeVρG/GeOG\times_{G_e}V_{\rho}\to G/G_e\cong\mathcal{O}. The orbit-method quantization conjecture. There \exists a (not necessarily unique) (gC,KC)(\mathfrak{g}_{\mathbb{C}},K_{\mathbb{C}})-module QQ such that

QKCR(O),Q|_{K_{\mathbb{C}}}\cong R(\mathcal{O}),

and, more generally, for every irreducible representation ρ\rho of A(O)A(\mathcal{O}), there exists a (gC,KC)(\mathfrak{g}_{\mathbb{C}},K_{\mathbb{C}})-module QρQ_{\rho} such that

QρKCR(O,ρ)=IndGeG(ρ).Q_{\rho}|_{K_{\mathbb{C}}}\cong R(\mathcal{O},\rho)=\operatorname{Ind}_{G^e}^{G}(\rho).

When ρ\rho is trivial, R(O,ρ)=R(O)R(\mathcal{O},\rho)=R(\mathcal{O}). This is the orbit-method prediction for quantizing nilpotent orbits and their equivariant local systems; the source gives no resolution status.

Sources & referencesView supporting material

Primary source

Kayue Daniel Wong, “Some Calculations of the Lusztig-Vogan Bijection for Classical Nilpotent Orbits”, arXiv:1605.09575 (2017).

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