The conifold gap conjecture for local P2\mathbb{P}^2 relative to an elliptic curve

Let tcont_{\mathrm{con}} be the flat coordinate near the conifold point, and let Fg,conP2 ⁣/ ⁣EF_{g,\mathrm{con}}^{\mathbb{P}^2\!/\!E} denote the genus-gg free energy expressed as a function of this coordinate. The conifold point is given by tcon=0t_{\mathrm{con}}=0. Conifold gap conjecture. For every g2g\geq 2,

Fg,conP2 ⁣/ ⁣E=22g1122g1B2g2g(2g1)(2g2)1tcon2g2+O(1)F_{g,\mathrm{con}}^{\mathbb{P}^2\!/\!E}=-\frac{2^{2g-1}-1}{2^{2g-1}}\frac{|B_{2g}|}{2g(2g-1)(2g-2)}\frac{1}{t_{\mathrm{con}}^{2g-2}}+O(1)

near the conifold point, where B2gB_{2g} denotes the 2g2g-th Bernoulli number. This is a proposed analogue for FgP2 ⁣/ ⁣EF_g^{\mathbb{P}^2\!/\!E} of the conifold gap conjecture for local P2\mathbb{P}^2. The corresponding local P2\mathbb{P}^2 conjecture is known in low genus but remains open in general; the status of this relative version is not resolved in the supplied text.

Sources & referencesView supporting material

Primary source

Pierrick Bousseau, Honglu Fan, Shuai Guo and Longting Wu, “Holomorphic anomaly equation for (P^2,E) and the Nekrasov-Shatashvili limit of local P^2”, arXiv:2001.05347 (2021).

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