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arXiv · 2408.09479

2d Mirrors in nonabelian 3d Mirror Symmetry

Ki Fung Chan·Naichung Conan Leung
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Abstract

We establish a connection between (nonabelian) equivariant 2d mirror symmetry and the geometry of Coulomb branches. In the context of 3d mirror symmetry, a Hamiltonian $G$-manifold $Y$ is expected to determine a complex Lagrangian subvariety $\mathbb{L}^G_Y$ of the Coulomb branch. Using transverse Hilbert schemes and nil-Hecke algebras, we develop an algebro-geometric framework for studying Coulomb branches and their Lagrangian subvarieties and formulate criteria for the existence of $\mathbb{L}^G_Y$ in terms of equivariant 2d mirror symmetry. We then reinterpret these criteria in terms of Lagrangian displaceability and prove the resulting statements using Lagrangian Floer theory.

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Ki Fung Chan, Naichung Conan Leung. 2024-08-18. 2d Mirrors in nonabelian 3d Mirror Symmetry. https://arxiv.org/abs/2408.09479

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