Conformal-block correspondence under quantum Drinfeld–Sokolov reduction

Let \mcC{\mc C} be a smooth projective algebraic curve, let pip_i be marked points, let Lλi,LkL_{\lambda_i,{}^Lk} be the relevant modules for the affine algebra at level Lk{}^Lk, and let HDS(Lλi,Lk)H_{\operatorname{DS}}(L_{\lambda_i,{}^Lk}) be their quantum Drinfeld–Sokolov reductions. Let C_{V_{{}^Lk({}^L\mathfrak{g})}({\mc C},(p_i),(L_{\lambda_i,{}^Lk})) and C\mcWβ(g)(\mcC,(pi),(HDS(Lλi,Lk)))C_{{\mc W}_\beta(\mathfrak{g})}({\mc C},(p_i),(H_{\operatorname{DS}}(L_{\lambda_i,{}^Lk}))) denote the corresponding spaces of conformal blocks. Conformal-block correspondence conjecture. Provided that the parameters satisfy the conditions of the braided tensor equivalence conjecture, there are isomorphisms

CVLk(Lg)(\mcC,(pi),(Lλi,Lk))C\mcWβ(g)(\mcC,(pi),(HDS(Lλi,Lk))).C_{V_{{}^Lk({}^L\mathfrak{g})}}({\mc C},(p_i),(L_{\lambda_i,{}^Lk}))\simeq C_{{\mc W}_\beta(\mathfrak{g})}({\mc C},(p_i),(H_{\operatorname{DS}}(L_{\lambda_i,{}^Lk}))).

This is described as a global consequence of the local categorical statement, explicitly at least for \mcC=CP1{\mc C}=\mathbb{C}\mathbb{P}^1 in the surrounding discussion. It remains conditional on the braided tensor equivalence conjecture.

Sources & referencesView supporting material

Primary source

Mina Aganagic, Edward Frenkel and Andrei Okounkov, “Quantum q-Langlands Correspondence”, arXiv:1701.03146 (2018).

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