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arXiv · 2401.10730

Recursion relations and BPS-expansions in the HOMFLY-PT skein of the solid torus

Lukas Nakamura
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Abstract

Inspired by the skein valued open Gromov-Witten theory of Ekholm and Shende and the Gopakumar-Vafa formula, we associate to each pair of non-negative integers $(g,l)$ a formal power series with values in the HOMFLY-PT skein of a disjoint union of $l$ solid tori. The formal power series can be thought of as open BPS-states of genus $g$ with $l$ boundary components and reduces to the contribution of a single BPS state of genus $g$ for $l=0$. Using skein theoretic methods we show that the formal power series satisfy gluing identities and multi-cover skein relations corresponding to an elliptic boundary node of the underlying curves. For $(g,l)=(0,1)$ we prove a crossing formula which is the multi-cover skein relation corresponding to a hyperbolic boundary node, also known as the pentagon identity.

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Lukas Nakamura. 2024-01-19. Recursion relations and BPS-expansions in the HOMFLY-PT skein of the solid torus. https://arxiv.org/abs/2401.10730

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