Asymptotic volume formula for strata of Abelian differentials

Let m=(m1,,mn)m=(m_1,\dots,m_n) be an unordered partition of 2g22g-2, with m=m1++mn=2g2|m|=m_1+\dots+m_n=2g-2, and let Π2g2\Pi_{2g-2} denote the set of all such partitions. Write VolH1(m1,,mn)\operatorname{Vol}{\mathcal H}_1(m_1,\dots,m_n) for the volume of the stratum of unit-area Abelian differentials, and let ε1(m)\varepsilon_1(m) denote the error term.

Asymptotic volume conjecture. For any mΠ2g2m\in\Pi_{2g-2},

VolH1(m1,,mn)=4(m1+1)(mn+1)(1+ε1(m)),\operatorname{Vol}{\mathcal H}_1(m_1,\dots,m_n)=\cfrac{4}{(m_1+1)\cdot\dots\cdot(m_n+1)}\cdot(1+\varepsilon_1(m)),

where

limgmaxmΠ2g2ε1(m)=0.\lim_{g\to\infty}\max_{m\in\Pi_{2g-2}}|\varepsilon_1(m)|=0.

This gives a uniform large-genus asymptotic for the volumes of all strata. The source notes that the formula was known in the principal stratum at the time, while the corresponding statement for general strata remained open.

Sources & referencesView supporting material

Primary source

Alex Eskin and Anton Zorich, “Volumes of strata of Abelian differentials and Siegel-Veech constants in large genera”, arXiv:1507.05296 (2015).

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