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Asymptotic geometry of negatively curved manifolds of finite volume

Abstract : We study the asymptotic behaviour of simply connected, Riemannian manifolds X of strictly negative curvature admitting a non-uniform lattice Γ. If the quotient manifold ¯ X = Γ\X is asymptotically 1/4-pinched, we prove that Γ is divergent and U ¯ X has finite Bowen-Margulis measure (which is then ergodic and totally conservative with respect to the geodesic flow); moreover, we show that, in this case, the volume growth of balls B(x, R) in X is asymptotically equivalent to a purely exponential function c(x)e δR , where δ is the topological entropy of the geodesic flow of ¯ X. This generalizes Margulis' celebrated theorem to negatively curved spaces of finite volume. In contrast, we exhibit examples of lattices Γ in negatively curved spaces X (not asymptotically 1/4-pinched) where, depending on the critical exponent of the parabolic subgroups and on the finiteness of the Bowen-Margulis measure, the growth function is exponential, lower-exponential or even upper-exponential.
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Contributor : Marc Peigné Connect in order to contact the contributor
Submitted on : Monday, February 6, 2017 - 5:08:51 AM
Last modification on : Tuesday, October 19, 2021 - 10:48:09 AM
Long-term archiving on: : Sunday, May 7, 2017 - 12:23:12 PM


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  • HAL Id : hal-01456779, version 1



Françoise Dal'Bo-Milonet, Marc Peigné, Jean-Claude Picaud, Andrea Sambusetti. Asymptotic geometry of negatively curved manifolds of finite volume. 2017. ⟨hal-01456779⟩