Geometry of the mirror models dual to the complete intersection of two cubics

Mykola Pochekai

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arXiv · 2311.15103

Geometry of the mirror models dual to the complete intersection of two cubics

Mykola Pochekai

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Abstract

We construct a natural crepant resolution of the Batyrev-Borisov mirror dual family to the complete intersection of two cubic hypersurfaces in $\mathbb P^5$. It is, similarly to the mirrors of quintic threefolds, a family over $\mathbb{P}^1$ with singular fibers over the set $\{0, \infty\} \cup \mu_6$. We compute an explicit height function producing the MPCP desingularization of the $B$-model toric ambient space. We compute the limiting mixed Hodge structures of the singular fibers. We show that the singular fiber over $\infty$ has maximal unipotent monodromy, whereas the singular fiber over $0$ is of a new type compared to the quintic case.

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Mykola Pochekai. 2023-11-25. Geometry of the mirror models dual to the complete intersection of two cubics. https://arxiv.org/abs/2311.15103

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