Veech Surfaces and Expanding Twist Tori on Moduli Spaces of Abelian Differentials

Fuente: arXiv
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Autores principales: Chaika, Jon, Khalil, Osama
Formato: Preprint
Publicado: 2025
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author Chaika, Jon
Khalil, Osama
author_facet Chaika, Jon
Khalil, Osama
contents Let $(M,ω)$ be a translation surface such that every leaf of its horizontal foliation is either closed, or joins two zeros of $ω$. Then, $M$ decomposes as a union of horizontal Euclidean cylinders. The $\textit{twist torus}$ of $(M,ω)$, denoted $\mathbb{T}(ω)$, consists of all translation surfaces obtained from $(M,ω)$ by applying the horocycle flow independently to each of these cylinders. Let $g_t$ be the Teichmüller geodesic flow. We study the distribution of the expanding tori $g_t\cdot \mathbb{T}(ω)$ on moduli spaces of translation surfaces in cases where $(M,ω)$ is a $\textit{Veech surface}$. We provide sufficient criteria for these tori to become dense within the conjectured limiting locus $\mathcal{M} :=\overline{\mathrm{SL}_2(\mathbb{R})\cdot \mathbb{T}(ω)}$ as $t\rightarrow \infty$. We also provide criteria guaranteeing a uniform lower bound on the mass a given open set $U\subset\mathcal{M}$ must receive with respect to any weak-$\ast$ limit of the uniform measures on $g_t\cdot \mathbb{T}(ω)$ as $t\rightarrow\infty$. In particular, all such limits must be fully supported in $\mathcal{M}$ in such cases. Finally, we exhibit infinite families of well-known examples of Veech surfaces satisfying each of these results. A key feature of our results in comparison to previous work is that they do not require passage to subsequences.
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id arxiv_https___arxiv_org_abs_2507_09775
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Veech Surfaces and Expanding Twist Tori on Moduli Spaces of Abelian Differentials
Chaika, Jon
Khalil, Osama
Dynamical Systems
Geometric Topology
Let $(M,ω)$ be a translation surface such that every leaf of its horizontal foliation is either closed, or joins two zeros of $ω$. Then, $M$ decomposes as a union of horizontal Euclidean cylinders. The $\textit{twist torus}$ of $(M,ω)$, denoted $\mathbb{T}(ω)$, consists of all translation surfaces obtained from $(M,ω)$ by applying the horocycle flow independently to each of these cylinders. Let $g_t$ be the Teichmüller geodesic flow. We study the distribution of the expanding tori $g_t\cdot \mathbb{T}(ω)$ on moduli spaces of translation surfaces in cases where $(M,ω)$ is a $\textit{Veech surface}$. We provide sufficient criteria for these tori to become dense within the conjectured limiting locus $\mathcal{M} :=\overline{\mathrm{SL}_2(\mathbb{R})\cdot \mathbb{T}(ω)}$ as $t\rightarrow \infty$. We also provide criteria guaranteeing a uniform lower bound on the mass a given open set $U\subset\mathcal{M}$ must receive with respect to any weak-$\ast$ limit of the uniform measures on $g_t\cdot \mathbb{T}(ω)$ as $t\rightarrow\infty$. In particular, all such limits must be fully supported in $\mathcal{M}$ in such cases. Finally, we exhibit infinite families of well-known examples of Veech surfaces satisfying each of these results. A key feature of our results in comparison to previous work is that they do not require passage to subsequences.
title Veech Surfaces and Expanding Twist Tori on Moduli Spaces of Abelian Differentials
topic Dynamical Systems
Geometric Topology
url https://arxiv.org/abs/2507.09775