The higher genus log/open correspondence for quasi-tame Looijenga pairs

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Let Y(D)Y(D) be a quasi-tame Looijenga pair with components D1,…,DlD_1,\ldots,D_l, let Yop(D)Y^{\rm op}(D) be its associated open geometry, and let dd be a curve class. Write [n]q=qn/2−q−n/2[n]_q=q^{n/2}-q^{-n/2}, set q=eiℏq=\mathrm{e}^{\mathrm{i}\hbar}, and let Od\mathbb{O}_d, Ndlog⁡\mathbb{N}^{\rm \log}_d, and LMOVd\mathbb{LMOV}_d denote the all-genus open, logarithmic, and LMOV generating functions and invariants.

The higher genus log/open correspondence. One has

Od(Yop(D))(ℏ)=(∏j=1l−1(−1)d⋅Dj−1d⋅Dj)(−1)d⋅Dl−1[d⋅Dl]qNdlog⁡(Y(D))(ℏ).\mathbb{O}_d(Y^{\rm op}(D))(\hbar)=\left(\prod_{j=1}^{l-1}\frac{(-1)^{d\cdot D_j-1}}{d\cdot D_j}\right)\frac{(-1)^{d\cdot D_l-1}}{[d\cdot D_l]_q}\mathbb{N}^{\rm \log}_d(Y(D))(\hbar).

Moreover,

LMOVd(Yop(D))(ℏ)=[1]q2(∏i=1l1[d⋅Di]q)∑k∣d(−1)d/k⋅D+lμ(k)[k]q2−lk2−lNd/klog⁡(Y(D))(kℏ)∈Z[q,q−1].\mathbb{LMOV}_d(Y^{\rm op}(D))(\hbar)=[1]_q^2\left(\prod_{i=1}^l\frac{1}{[d\cdot D_i]_q}\right)\sum_{k\mid d}\frac{(-1)^{d/k\cdot D+l}\mu(k)}{[k]_q^{2-l}k^{2-l}}\mathbb{N}^{\rm \log}_{d/k}(Y(D))(k\hbar)\in\mathbb{Z}[q,q^{-1}].

This all-genus extension relates logarithmic and open Gromov--Witten theories through a qq-hypergeometric identity. The source records that two non-tame quasi-tame cases were subsequently proved, while the full correspondence remains unresolved.

References

Primary source

Andrea Brini and Yannik Schuler, “On quasi-tame Looijenga pairs”, arXiv:2201.01645 (2023).

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