The conformal measures of a normal subgroup of a cocompact Fuchsian group

Ofer Shwartz

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arXiv · 1911.07797

The conformal measures of a normal subgroup of a cocompact Fuchsian group

Ofer Shwartz

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Abstract

In this paper, we study the conformal measures of a normal subgroup of a cocompact Fuchsian group. In particular, we relate the extremal conformal measures to the eigenmeasures of a suitable Ruelle operator. Using Ancona's theorem, adapted to the Ruelle operator setting, we show that if the group of deck transformations $G$ is hyperbolic then the extremal conformal measures and the hyperbolic boundary of $G$ coincide. We then interpret these results in terms of the asymptotic behavior of cutting sequences of geodesics on a regular cover of a compact hyperbolic surface.

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Ofer Shwartz. 2019-11-18. The conformal measures of a normal subgroup of a cocompact Fuchsian group. https://arxiv.org/abs/1911.07797

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