Scattering Diagrams from Holomorphic Discs in Log Calabi-Yau Surfaces
arXiv:2110.15234
Abstract
We construct special Lagrangian fibrations for log Calabi-Yau surfaces, and scattering diagrams from Lagrangian Floer theory of the fibres. Then we prove that the scattering diagrams recover the scattering diagrams of Gross-Pandharipande-Siebert and the canonical scattering diagrams of Gross-Hacking-Keel. With an additional assumption on the non-negativity of boundary divisors, we compute the disc potentials of the Lagrangian torus fibres via a holomorphic/tropical correspondence. As an application, we provide a version of mirror symmetry for rank two cluster varieties.
arXiv comment61 pages, 9 figures. comments are welcome; v2. exposition improved, accepted version
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