Asymptotic Gamma-class conjecture for monotone symplectic manifolds

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Let XX be a monotone symplectic manifold. For Chern roots xjx_j of TXTX, let uu be the equivariant parameter, let JXd=ev∗d(11−uψ)J_X^d=ev^d_*\left(\frac{1}{1-u\psi}\right), and let ⟨JXd,Vol⁡X⟩X\langle J_X^d,\operatorname{Vol}_X\rangle_X denote the normalization appearing in the source. Asymptotic Gamma-class conjecture. One has

lim⁡d→∞(∏k=1d∏j=1dim⁡(X)(1+xjuk)−1−JXd⟨JXd,Vol⁡X⟩X)=0.\lim_{d\to\infty}\left(\prod_{k=1}^{d}\prod_{j=1}^{\dim(X)}\left(1+\frac{x_j}{uk}\right)^{-1}-\frac{J_X^d}{\langle J_X^d,\operatorname{Vol}_X\rangle_X}\right)=0.

The convergence is faster than O(log⁡(d)dim⁡(X))O(\log(d)^{\dim(X)}), in the sense stated in the source. This generalizes a termwise equality conjectured for Kähler varieties, while the source notes that only the limits agree for the twistor bundles under consideration; a general proof remains open.

References

Primary source

Kai Hugtenburg, “On the quantum differential equations for a family of non-Kähler monotone symplectic manifolds”, arXiv:2402.10867 (2024).

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