Higher-dimensional Heegaard Floer homology and spectral networks

Ko Honda; Yin Tian; Tianyu Yuan

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arXiv · 2601.15923

Higher-dimensional Heegaard Floer homology and spectral networks

Ko Honda·Yin Tian·Tianyu Yuan

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Abstract

Given a closed surface $C$ and a real exact Lagrangian $\Sigma \subset T^*C$ associated to a spectral curve, we construct a homomorphism $\operatorname{BSk}_\kappa(C)\to\operatorname{Mat}(N^{\kappa},\operatorname{BSk}_\kappa(\Sigma))$ from the braid skein algebra of $C$ to the matrix-valued braid skein algebra of $\Sigma$ using Floer theory and in particular higher-dimensional Heegaard Floer homology (HDHF). We sketch a proof that this map coincides with a hybrid Floer-Morse approach which counts HDHF-type holomorphic curves coupled with certain Morse gradient graphs -- called fold\-ed Morse trees -- using a variant of the adiabatic limit theorems of Fukaya-Oh and Ekholm, which compares holomorphic curves and Morse flow trees.

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Ko Honda, Yin Tian, Tianyu Yuan. 2026-01-22. Higher-dimensional Heegaard Floer homology and spectral networks. https://arxiv.org/abs/2601.15923

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