Genus-asymptotic roots conjecture for deformed monotone Hurwitz numbers

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Fix positive integers μ1,…,μn\mu_1,\ldots,\mu_n whose sum is dd. Let the roots of the polynomial H⃗g,nt(μ1,…,μn)\vec{H}^t_{g,n}(\mu_1,\ldots,\mu_n) be ordered from smallest to largest. Genus-asymptotic roots conjecture. As g→∞g\to\infty, these roots respectively approach

−d−21,−d−32,−d−43,…,−2d−3,−1d−2,0.-\frac{d-2}{1},\quad-\frac{d-3}{2},\quad-\frac{d-4}{3},\quad\ldots,\quad-\frac{2}{d-3},\quad-\frac{1}{d-2},\quad 0.

Moreover, convergence to a number less than −1-1 is increasing from below, while convergence to a nonzero number greater than −1-1 is decreasing from above. This conjecture is supported by extensive data, but remains open.

References

Primary source

Xavier Coulter, Norman Do and Ellena Moskovsky, “Integration on complex Grassmannians, deformed monotone Hurwitz numbers, and interlacing phenomena”, arXiv:2308.04015 (2023).

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