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From tropical curves to special Lagrangians

Differential Geometry 2025-09-08 v1

Abstract

We show that any locally planar tropical curve ΓRn\Gamma \subset \mathbb{R}^n (with unit edge weights) can be realized as the limit of the rescaled moment map images of a family of special Lagrangian submanifolds in TTnT^*T^n with respect to the Euclidean structure. This is based on a gluing construction that matches special Lagrangian local models to the combinatorics of Γ\Gamma, thereby establishing a direct link between tropical geometry and special Lagrangian geometry.

Keywords

Cite

@article{arxiv.2509.04843,
  title  = {From tropical curves to special Lagrangians},
  author = {Shih-Kai Chiu and Yang Li and Yu-Shen Lin},
  journal= {arXiv preprint arXiv:2509.04843},
  year   = {2025}
}

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17 pages