English

Higher-dimensional Heegaard Floer homology and spectral networks

Symplectic Geometry 2026-01-23 v1

Abstract

Given a closed surface CC and a real exact Lagrangian ΣTC\Sigma \subset T^*C associated to a spectral curve, we construct a homomorphism BSkκ(C)Mat(Nκ,BSkκ(Σ))\operatorname{BSk}_\kappa(C)\to\operatorname{Mat}(N^{\kappa},\operatorname{BSk}_\kappa(\Sigma)) from the braid skein algebra of CC to the matrix-valued braid skein algebra of Σ\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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Cite

@article{arxiv.2601.15923,
  title  = {Higher-dimensional Heegaard Floer homology and spectral networks},
  author = {Ko Honda and Yin Tian and Tianyu Yuan},
  journal= {arXiv preprint arXiv:2601.15923},
  year   = {2026}
}

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35 pages