BD additivity conjecture

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Work over the complete topological k⟦ℏ⟧k\llbracket\hbar\rrbracket-modules, with their symmetric monoidal structure, and let \mathbbstBD0\mathbbst{BD}_0 and \mathbbstBD1\mathbbst{BD}_1 denote the corresponding BeilinsonDrinfeld operads. Write \EuScriptAlg\mathbbstBDi(\EuScriptMod\mathbbstk⟦ℏ⟧⊗)\EuScript{A}\mathsf{lg}_{\mathbbst{BD}_i}(\EuScript{M}\mathsf{od}_{\mathbbst{k}\llbracket\hbar\rrbracket}^\otimes) for the ∞\infty-category of unital algebras over \mathbbstBDi\mathbbst{BD}_i, and similarly for \mathbbstE1\mathbbst{E}_1-algebras. BD additivity conjecture. There is an equivalence of ∞\infty-categories

\EuScriptAlg\mathbbstBD1(\EuScriptMod\mathbbstk⟦ℏ⟧⊗)≃\EuScriptAlg\mathbbstE1(\EuScriptAlg\mathbbstBD0(\EuScriptMod\mathbbstk⟦ℏ⟧⊗)).\EuScript{A}\mathsf{lg}_{\mathbbst{BD}_1}(\EuScript{M}\mathsf{od}_{\mathbbst{k}\llbracket\hbar\rrbracket}^\otimes)\simeq \EuScript{A}\mathsf{lg}_{\mathbbst{E}_1}\big(\EuScript{A}\mathsf{lg}_{\mathbbst{BD}_0}(\EuScript{M}\mathsf{od}_{\mathbbst{k}\llbracket\hbar\rrbracket}^\otimes)\big).

This equivalence should recover Safronov's Poisson additivity equivalence after tensoring with \mathbbstk\mathbbst{k}, equivalently after setting ℏ=0\hbar=0. It would imply that the stated strategy for quantizing ordinary Poisson structures always works, extending the known quantization of symplectic manifolds to this general categorical setting.

References

Primary source

Damien Calaque and Victor Carmona, “Algebras over not too little discs”, arXiv:2407.18192 (2025).

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