Refined correlator-volume correspondence for bordered Klein surfaces

Let g12Z0g\in\frac12\mathbb{Z}_{\geq0} and nZ1n\in\mathbb{Z}_{\geq1} satisfy 22gn<02-2g-n<0. Let ωg,nb\omega_{g,n}^{\mathfrak b} be the refined correlator on the refined spectral curve, let Vg,nϵ(L[n])V_{g,n}^{\epsilon}(L_{[n]}) be the total volume of the corresponding regularised moduli space, and let L^L1\hat{\mathcal{L}}_{L}^{-1} denote termwise inverse Laplace transformation. Introduce bb by b=b1+b\mathfrak b=-\frac{b}{\sqrt{1+b}}. Refined correlator-volume conjecture. The relation between the refined correlators and total volumes holds for all such (g,n)(g,n), namely

i=1nLiVg,nϵ(L[n])=(1+b)g(L^L11L^Ln1) ⁣ωg,nbb=1.\prod_{i=1}^nL_i\cdot V_{g,n}^{\epsilon}(L_{[n]})=(1+b)^g\left(\hat{\mathcal{L}}_{L_1}^{-1}\cdots\hat{\mathcal{L}}_{L_n}^{-1}\right)\!\cdot\omega_{g,n}^{\mathfrak b}\big|_{b=1}.

This extends the theorem established for the cases with 22gn=12-2g-n=-1, including (g,n)=(0,3),(12,2),(1,1)(g,n)=(0,3),(\frac12,2),(1,1). The conjecture proposes that refined topological recursion recovers all total hyperbolic volumes, but it remains open beyond the tested cases and requires the analytic and convergence properties of the refined correlators.

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Primary source

Elba Garcia-Failde, Paolo Gregori and Kento Osuga, “Volumes of moduli spaces of bordered Klein surfaces”, arXiv:2511.21986 (2025).

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