The Fukaya-to-sheaf quantization conjecture for cotangent bundles

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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 {τ≤0}\{\tau\leq 0\}, where τ\tau is the cotangent coordinate on \bRt\bR_t. A sheaf quantization of a Lagrangian L⊂T∗ML\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(T∗M)Fuk(T^*M) of nonexact Lagrangians in T∗MT^*M with a natural embedding

Fuk(T∗M)↪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.

References

Primary source

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

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