Cyclotomic Gaudin algebra spectrum conjecture

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Let λ0∈h∗,ν\lambda_0\in\mathfrak{h}^{*,\nu} be the dominant ν\nu-invariant weight satisfying ⟨αˇi,λ0⟩∈Q\langle\check\alpha_i,\lambda_0\rangle\in\mathbb{Q} for all i∈Ii\in I. Let Op⁡LgΓ(P1)z;λ0RS\operatorname{Op}_{{}^L\mathfrak{g}}^\Gamma(\mathbb{P}^1)^{\mathrm{RS}}_{\mathbf z;\lambda_0} be the space of cyclotomic Lg{}^L\mathfrak{g}-opers with regular singularities at z={0,z1,…,zN,∞}\mathbf z=\{0,z_1,\ldots,z_N,\infty\}, residue at the origin given by the finite Lgν{}^L\mathfrak{g}^{\nu}-oper [λ0]Wν[\lambda_0]_{W^\nu}, and monodromy e2πiλ0e^{2\pi i\lambda_0} at the origin. Cyclotomic Gaudin spectrum conjecture. The cyclotomic Gaudin algebra Z(zi)Γ(g)\mathscr Z^\Gamma_{(z_i)}(\mathfrak{g}) is isomorphic to the algebra of functions on this oper space; equivalently,

Spec⁡Z(zi)Γ(g)≃Op⁡LgΓ(P1)z;λ0RS.\operatorname{Spec}\mathscr Z^\Gamma_{(z_i)}(\mathfrak{g})\simeq\operatorname{Op}_{{}^L\mathfrak{g}}^\Gamma(\mathbb{P}^1)^{\mathrm{RS}}_{\mathbf z;\lambda_0}.

This is the paper's second cyclotomic spectral conjecture, identifying the maximal spectrum of the cyclotomic Gaudin algebra with a space of regular-singular cyclotomic opers; its status is not resolved in the supplied text.

References

Primary source

Sylvain Lacroix and Benoit Vicedo, “Cyclotomic Gaudin models, Miura opers and flag varieties”, arXiv:1607.07397 (2017).

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