Local-limit conjecture for halfway permutation point processes

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Let (x,y)(x,y) lie in the open unit disk. Define the rescaled point process

Πn(x,y)={n2π(1−x2−y2)1/4(σGn(i,0)−x,σGn(i,1/2)−y):i∈1,…,n}⊂R2.\Pi_n(x,y)=\left\{\frac{\sqrt n}{\sqrt{2\pi}(1-x^2-y^2)^{1/4}}\left(\sigma_G^n(i,0)-x,\sigma_G^n(i,1/2)-y\right):i\in{1,\mathellipsis,n}\right\}\subset\mathbb{R}^2.

Local-limit conjecture. There exists a rotationally symmetric, translation-invariant point process PiPi on R2\mathbb{R}^2 such that, for every (x,y)(x,y) in the open unit disk,

Πn(x,y)→dΠ.\Pi_n(x,y)\stackrel{d}{\to}\Pi.

This conjecture seeks the universal local point-process limit inside the Archimedean support of the halfway permutation; the paper presents it as an open problem.

References

Primary source

Duncan Dauvergne and Bálint Virág, “Circular support in random sorting networks”, arXiv:1802.08933 (2018).

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