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arXiv · 2508.05771

Statistical properties of equilibrium states for fiber-bunched matrix cocycles and applications

Reza Mohammadpour·Paulo Varandas
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Abstract

We contribute to the thermodynamic formalism of H\"older continuous fiber-bunched matrix cocycles, Anosov diffeomorphisms, and hyperbolic repellers. Specifically, we prove that $1$-typical fiber-bunched cocycles $\mathcal{A}$ over topologically mixing subshifts of finite type admit a unique Gibbs equilibrium state $\mu_t$ associated with the non-additive family of potentials $\{t \log \|\mathcal{A}^n\|\}_{n \in \mathbb{N}}$, for a range of parameters $t \in (-t_*, +\infty)$, where $t_* > 0$. Furthermore, these equilibrium states are $\psi$-mixing, therefore weak Bernoulli. In addition, these results allow us to derive consequences for the thermodynamic formalism of open sets of hyperbolic repellers and Anosov diffeomorphisms. In particular, it provides a positive answer to a conjecture posed by Gatzouras and Peres for $C^1$-open sets of $\alpha$-fiber-bunched hyperbolic repellers.

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Reza Mohammadpour, Paulo Varandas. 2025-08-07. Statistical properties of equilibrium states for fiber-bunched matrix cocycles and applications. https://arxiv.org/abs/2508.05771

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