Deviations of ergodic sums for toral translations II. Boxes

We study the Kronecker sequence $\{nα\}_{n\leq N}$ on the torus ${\mathbb T}^d$ when $α$ is uniformly distributed on ${\mathbb T}^d.$ We show that the discrepancy of the number of visits of this sequence to a random box, normalized by $\ln^d N$, converges as $N\to\infty$ to a Cauchy distribution. The key ingredient of the proof is a Poisson limit theorem for the Cartan action on the space of $d+1$ dimensional lattices.

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