The Fukaya-to-sheaf quantization conjecture for cotangent bundles

Let \bK\bK be a field, let MM be a real manifold, and let \bRt\bR_t be the real line with coordinate tt. Write Shτ>0\bRδ(M×\bRt)\mathrm{Sh}_{\tau>0}^{\bR^\delta}(M\times \bR_t) for the equivariant Tamarkin category defined by quotienting by objects with microsupport in {τ0}\{\tau\leq 0\}, where τ\tau is the cotangent coordinate on \bRt\bR_t. A sheaf quantization of a Lagrangian LTML\subset T^*M is an object whose positive microsupport projects to LL. Fukaya-to-sheaf quantization conjecture. There exists an infinitesimally wrapped Fukaya category Fuk(TM)Fuk(T^*M) of nonexact Lagrangians in TMT^*M with a natural embedding

Fuk(TM)Shτ>0\bRδ(M×\bRt).Fuk(T^*M)\hookrightarrow \mathrm{Sh}_{\tau> 0}^{\bR^\delta}(M\times \bR_t).

The conjecture is known for integral Lagrangians; the general assertion for nonexact Lagrangians remains open. In the paper it is used to predict sheaf quantizability of generic rotations of holomorphic Lagrangians.

Sources & referencesView supporting material

Primary source

Tatsuki Kuwagaki, “On the generic existence of WKB spectral networks/Stokes graphs”, arXiv:2408.05399 (2024).

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