Effective equidistribution of unipotent orbits in homogeneous spaces of $\SL(2,\R)\ltimes(\R^2)^{k}$

Fuente: arXiv
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Autores principales: Strömbergsson, Andreas, Södergren, Anders, Vishe, Pankaj
Formato: Preprint
Publicado: 2026
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author Strömbergsson, Andreas
Södergren, Anders
Vishe, Pankaj
author_facet Strömbergsson, Andreas
Södergren, Anders
Vishe, Pankaj
contents Let $G=\SL(2,\R)\ltimes(\R^2)^{k}$, let $Γ$ be a congruence subgroup of $\SL(2,\Z)\ltimes(\Z^2)^{k}$, and let $u_{\R}=(u_x)_{x\in\R}$ be the one-parameter subgroup of $G$ given by $u_x=\left(\matr 1x01,0\right)$. We prove polynomially effective asymptotic equidistribution results for expanding translates of $u_{\R}$-orbits and for long pieces of individual $u_{\R}$-orbits in $Γ\backslash G$. An important ingredient of the proof is the delta symbol version of the circle method.
format Preprint
id arxiv_https___arxiv_org_abs_2604_08753
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Effective equidistribution of unipotent orbits in homogeneous spaces of $\SL(2,\R)\ltimes(\R^2)^{k}$
Strömbergsson, Andreas
Södergren, Anders
Vishe, Pankaj
Dynamical Systems
Number Theory
37A17, 37A45, 11L07
Let $G=\SL(2,\R)\ltimes(\R^2)^{k}$, let $Γ$ be a congruence subgroup of $\SL(2,\Z)\ltimes(\Z^2)^{k}$, and let $u_{\R}=(u_x)_{x\in\R}$ be the one-parameter subgroup of $G$ given by $u_x=\left(\matr 1x01,0\right)$. We prove polynomially effective asymptotic equidistribution results for expanding translates of $u_{\R}$-orbits and for long pieces of individual $u_{\R}$-orbits in $Γ\backslash G$. An important ingredient of the proof is the delta symbol version of the circle method.
title Effective equidistribution of unipotent orbits in homogeneous spaces of $\SL(2,\R)\ltimes(\R^2)^{k}$
topic Dynamical Systems
Number Theory
37A17, 37A45, 11L07
url https://arxiv.org/abs/2604.08753