Orthosymplectic Satake conjecture for quantum orthosymplectic supergroups

Let nn and kk be nonnegative integers, let cC×Q×c\in\mathbb{C}^{\times}\setminus\mathbb{Q}^{\times}, and set

q=exp(π1/c).q=\exp(\pi\sqrt{-1}/c).

Let DW(F2k)1/2+c1Sp(2k,O)Uk(F),lc\mathcal{D}\mathcal{W}(\mathbb{F}^{2k})_{1/2+c^{-1}}^{\operatorname{Sp}(2k,\mathcal{O})\ltimes U_k(\mathbb{F}),\mathrm{lc}} and DW(F2k)c1Sp(2k,O)Uk(F),lc\mathcal{D}\mathcal{W}(\mathbb{F}^{2k})_{c^{-1}}^{\operatorname{Sp}(2k,\mathcal{O})\ltimes U_k(\mathbb{F}),\mathrm{lc}} be the locally compact equivariant categories defined from the completed Weyl algebra, and let Repq(SOSp(2k+12n))\operatorname{Rep}_q(\operatorname{SOSp}(2k+1|2n)) and Repq(SOSp(2n+12k))\operatorname{Rep}_q(\operatorname{SOSp}(2n+1|2k)) be the corresponding finite-dimensional quantum-group dg-categories. The orthosymplectic Satake conjecture. The categories

DW(F2k)1/2+c1Sp(2k,O)Uk(F),lcRepq(SOSp(2k+12n))\mathcal{D}\mathcal{W}(\mathbb{F}^{2k})_{1/2+c^{-1}}^{\operatorname{Sp}(2k,\mathcal{O})\ltimes U_k(\mathbb{F}),\mathrm{lc}}\simeq \operatorname{Rep}_q(\operatorname{SOSp}(2k+1|2n))

and

DW(F2k)c1Sp(2k,O)Uk(F),lcRepq(SOSp(2n+12k))\mathcal{D}\mathcal{W}(\mathbb{F}^{2k})_{c^{-1}}^{\operatorname{Sp}(2k,\mathcal{O})\ltimes U_k(\mathbb{F}),\mathrm{lc}}\simeq \operatorname{Rep}_q(\operatorname{SOSp}(2n+1|2k))

are equivalent as braided tensor categories, with the equivalences compatible with the tautological tt-structures. These are instances of the paper's proposed quantum geometric Satake equivalences for orthosymplectic Lie superalgebras; the statements are conjectural for the irrational parameters specified here.

Sources & referencesView supporting material

Primary source

Alexander Braverman, Michael Finkelberg and Roman Travkin, “Orthosymplectic Satake equivalence, II”, arXiv:2207.03115 (2024).

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