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3d mirror symmetry of the cotangent bundle of the full flag variety

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Abstract

Aganagic and Okounkov proved that the elliptic stable envelope provides the pole cancellation matrix for the enumerative invariants of quiver varieties known as vertex functions. This transforms a basis of a system of q-difference equations holomorphic in variables \({\varvec{z}}\) with poles in variables \({\varvec{a}}\) to a basis of solutions holomorphic in \({\varvec{a}}\) with poles in \({\varvec{z}}\). The resulting functions are expected to be the vertex functions of the 3d mirror dual variety. In this paper, we prove that the functions obtained by applying the elliptic stable envelope to the vertex functions of the cotangent bundle of the full flag variety are precisely the vertex functions for the same variety under an exchange of the parameters \(\text{\AA} \leftrightarrow {\varvec{z}}\). As a corollary of this, we deduce the expected 3d mirror relationship for the elliptic stable envelope.

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Notes

  1. Although \(V_p({\varvec{a}},{\varvec{z}})\) depends on q, we omit it as an argument.

  2. In general, the Coulomb branch corresponding to a type A quiver variety can be constructed as a bow variety, see [17, 22]. The combinatorial tools for studying vertex functions of bow varieties have not yet been developed.

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Acknowledgements

We would like to thank Andrey Smirnov for suggesting this project and for his guidance throughout.

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  1. Department of Mathematics, Northeastern University, Boston, MA, 02115-5000, USA

    Hunter Dinkins

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Dinkins, H. 3d mirror symmetry of the cotangent bundle of the full flag variety. Lett Math Phys 112, 100 (2022). https://doi.org/10.1007/s11005-022-01593-4

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