Quantum-connection identification for the Lagrangian Grassmannian Landau–Ginzburg model

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Let X=LG(m)X=LG(m), let G0WtG_0^{W_t} be the Gauss–Manin module associated to WtW_t, and let Gˉ0Wt\bar G_0^{W_t} be the C[ℏ,et]\mathbb{C}[\hbar,e^t]-submodule generated by the classes [pλω][p_\lambda\omega], where λ\lambda runs through the strict partitions inside an m×mm\times m box. Let A∇{}^A\nabla and B∇{}^B\nabla be the AA- and BB-model connections defined in the paper.

Quantum-connection identification conjecture. The differential operators ℏ B∇∂t\hbar\,{}^B\nabla_{\partial_t} and ℏ B∇ℏ∂ℏ\hbar\,{}^B\nabla_{\hbar\partial_\hbar} preserve Gˉ0Wt\bar G_0^{W_t}. Moreover, the assignment

σλ⟼[pλω]\sigma^\lambda\longmapsto[p_\lambda\omega]

defines an isomorphism H∗(X,C[ℏ,et])≅Gˉ0WtH^*(X,\mathbb{C}[\hbar,e^t])\cong\bar G_0^{W_t} under which A∇{}^A\nabla is identified with B∇{}^B\nabla.

This is the precise form of the paper's mirror-symmetry claim: the quantum connection of LG(m)LG(m) is recovered from the Gauss–Manin connection of WtW_t. The supplied text gives no resolution status.

References

Primary source

C. Pech and K. Rietsch, “A Landau-Ginzburg model for Lagrangian Grassmannians, Langlands duality and relations in quantum cohomology”, arXiv:1304.4958 (2013).

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