Torus-equivariant homological mirror symmetry for toric Fano stacks

Let Δ\Delta be a convex lattice polytope in \bRn\bR^n containing the origin in its interior. Let XX be the associated toric Fano stack, let \bT\bT be the nn-dimensional torus acting on XX, and let \Wtilde\Wtilde be the pullback of a Laurent polynomial mirror WW to the universal cover \bCn\bC^n of (\bC)n(\bC^*)^n. Write DbCoh\bT(X)D^b \operatorname{Coh}^{\bT}(X) for the derived category of \bT\bT-equivariant coherent sheaves. Torus-equivariant homological mirror symmetry conjecture. There is an equivalence of triangulated categories

DbCoh\bT(X)Db\Fuk\Wtilde.D^b \operatorname{Coh}^{\bT}(X) \cong D^b \Fuk \Wtilde.

This equivariant refinement implies ordinary homological mirror symmetry for XX and for finite torus quotient stacks. The paper proves it when XX is projective space, but the assertion for general convex lattice polytopes remains open in the source.

Sources & referencesView supporting material

Primary source

Masahiro Futaki and Kazushi Ueda, “Tropical coamoeba and torus-equivariant homological mirror symmetry for the projective space”, arXiv:1001.4858 (2014).

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