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arXiv · 2401.07740

Lax-Phillips orbit counting in higher rank

Alex Kontorovich·Christopher Lutsko
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Abstract

Given a discrete lattice, $Γ< \operatorname{SL}_m(\mathbb{R})$, and a base point $o \in \mathbb{R}^m$, let $N_Γ(T)$ denote the number of points in the orbit $o \cdot Γ$ whose (Euclidean) length is bounded by a growing parameter, $T$. We demonstrate an abstract spectral method à la Lax-Phillips, capable of obtaining strong asymptotic estimates for $N_Γ(T)$, and compare and contrast it with other methods.

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Alex Kontorovich, Christopher Lutsko. 2026-04-28. Lax-Phillips orbit counting in higher rank. https://arxiv.org/abs/2401.07740

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