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arXiv · 1802.07075

Extended $r$-spin theory and the mirror symmetry for the $A_{r-1}$-singularity

Alexandr Buryak
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Abstract

By a famous result of K. Saito, the parameter space of the miniversal deformation of the $A_{r-1}$-singularity carries a Frobenius manifold structure. The Landau-Ginzburg mirror symmetry says that, in the flat coordinates, the potential of this Frobenius manifold is equal to the generating series of certain integrals over the moduli space of $r$-spin curves. In this paper we show that the parameters of the miniversal deformation, considered as functions of the flat coordinates, also have a simple geometric interpretation using the extended $r$-spin theory, first considered by T. J. Jarvis, T. Kimura and A. Vaintrob, and studied in a recent paper of E. Clader, R. J. Tessler and the author. We prove a similar result for the singularity $D_4$ and present conjectures for the singularities $E_6$ and $E_8$.

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Alexandr Buryak. 2020-07-14. Extended $r$-spin theory and the mirror symmetry for the $A_{r-1}$-singularity. https://doi.org/10.17323/1609-4514-2020-20-3-475-493

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