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arXiv · 2009.03553

Tautological stable pair invariants of Calabi-Yau 4-folds

Yalong Cao·Yukinobu Toda
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Abstract

Let $X$ be a Calabi-Yau 4-fold and $D$ a smooth divisor on it. We consider tautological complex associated with $L=\mathcal{O}_X(D)$ on the moduli space of Le Potier stable pairs and define its counting invariant by integrating the Euler class against the virtual class. We conjecture a formula for their generating series expressed using genus zero Gopakumar-Vafa invariants of $D$ and genus one Gopakumar-Vafa type invariants of $X$, which we verify in several examples. When $X$ is the local resolved conifold, our conjecture reproduces a conjectural formula of Cao-Kool-Monavari in the PT chamber. In the JS chamber, we completely determine the invariants and confirm one of our previous conjectures.

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Yalong Cao, Yukinobu Toda. 2020-09-08. Tautological stable pair invariants of Calabi-Yau 4-folds. https://doi.org/10.1016/j.aim.2021.108176

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