English

$q$-Stability conditions via $q$-quadratic differentials for Calabi-Yau-$\mathbb{X}$ categories

Algebraic Geometry 2022-10-21 v4 Dynamical Systems Representation Theory

Abstract

Categorically, we introduce the Calabi-Yau-X\mathbb{X} categories DX\mathcal{D}_{\mathbb{X}} of a graded marked surface Sλ\mathbf{S}^\lambda, as a qq-deformation of the topological Fukaya category D\mathcal{D}_\infty of Sλ\mathbf{S}^\lambda. We show that D\mathcal{D}_\infty can be identified with the cluster-X\mathbb{X} category associated to DX\mathcal{D}_{\mathbb{X}}. Geometrically, we construct and identify the space of qq-quadratic differentials on the logarithm surface logcSλ\operatorname{log}_{\mathbf{c}} \mathbf{S}_\vartriangle^\lambda with the space of induced qq-stability conditions on DX\mathcal{D}_{\mathbb{X}}, for a complex parameter ss satisfying Re(s)1\operatorname{Re}(s)\gg1. When s=Ns=N is an integer, the result gives an NN-analogue of Bridgeland-Smith's result for realizing stability conditions on the orbit Calabi-Yau-NN category DX//[XN]\mathcal{D}_{\mathbb{X}}\mathbin{/\mkern-6mu/}[\mathbb{X}-N] via CY-NN type quadratic differentials. When the genus of S\mathbf{S} is zero, the space of qq-quadratic differentials can be also identified with framed Hurwitz spaces. As a byproduct, the result confirms the conjectural almost Frobenius structure on spaces of qq-stability conditions for type AA.

Cite

@article{arxiv.1812.00010,
  title  = {$q$-Stability conditions via $q$-quadratic differentials for Calabi-Yau-$\mathbb{X}$ categories},
  author = {Akishi Ikeda and Yu Qiu},
  journal= {arXiv preprint arXiv:1812.00010},
  year   = {2022}
}

Comments

Memoirs of Amer. Math. Soc. to appear

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