Topological mixing of positive diagonal flows

Nguyen-Thi Dang

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arXiv · 2011.12900

Topological mixing of positive diagonal flows

Nguyen-Thi Dang

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Abstract

Let $G$ be a semi-simple real Lie group without compact factors and $ \Gamma < G$ a Zariski dense, discrete subgroup. We study the topological dynamics of positive diagonal flows on $\Gamma \backslash G$. We extend Hopf coordinates to Bruhat-Hopf coordinates of $G$, which gives the framework to estimate the elliptic part of products of large generic loxodromic elements. By rewriting results of Guivarc'h-Raugi into Bruhat-Hopf coordinates, we partition the preimage in $\Gamma \backslash G$ of the non-wandering set of mixing regular Weyl chamber flows, into finitely many dynamically conjugated subsets. We prove a necessary condition for topological mixing, and when the connected component of the identity of the centralizer of the Cartan subgroup is abelian, we prove it is sufficient.

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Nguyen-Thi Dang. 2020-11-25. Topological mixing of positive diagonal flows. https://arxiv.org/abs/2011.12900

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