BD additivity conjecture

Work over the complete topological kk\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)\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)\EuScriptAlg\mathbbstE1(\EuScriptAlg\mathbbstBD0(\EuScriptMod\mathbbstk)).\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 =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.

Sources & referencesView supporting material

Primary source

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

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