Zograf's large-genus asymptotic conjecture for Weil–Petersson volumes

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Let Vg,nV_{g,n} denote the Weil–Petersson volume of the moduli space with genus gg and nn marked points. For any fixed n≥0n\geq 0, consider the limit as g→∞g\to\infty.

Zograf's conjecture. For any fixed n≥0n\geq 0, as g→∞g\to\infty,

Vg,n=(2g−3+n)!(4π2)2g−3+ngπ(1+cn1g+O(1g2)).V_{g,n}=\frac{(2g-3+n)!(4\pi^2)^{2g-3+n}}{\sqrt{g\pi}}\left(1+\frac{c^{1}_{n}}{g}+\mathit{O}\left(\frac{1}{g^{2}}\right)\right).

This gives a precise first-order large-genus asymptotic expansion and predicts the universal factorial and exponential growth of Weil–Petersson volumes. The source does not state a resolution of the conjecture.

References

Primary source

Xuanyu Huang, “Asymptotic coefficients of Weil-Petersson volumes in the large genus”, arXiv:2501.06421 (2025).

Additional references

3 papers in this index state this conjecture (2011–2025). The statement above is taken from the most recent of them; the others are arXiv:1103.4674, arXiv:1103.5136.

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