Pair Correlations in Uniform Countable Sets

Abstract

We determine the pair correlations of countable sets $T\subset {\mathbb{R}}^n$ satisfying natural equidistribution conditions. The pair correlations are computed as the volume of a certain region in ${\mathbb{R}}^{2n}$, which can be expressed in terms of the incomplete Beta function. For $n=2$ and $n=3$ we give closed form expressions, and we obtain an expression in the $n\to \infty$ limit. We also verify that sets of lattice points and primitive lattice points satisfy the required distribution criteria.

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