A variation formula for the topological entropy of convex-cocompact manifolds
A variation formula for the topological entropy of convex-cocompact manifolds
复制标题
凸协紧流形拓扑熵的变分公式
DOI:
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发表时间:
2010
影响因子:
0.9
通讯作者:
S. Tapie
中科院分区:
文献类型:
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作者:
S. Tapie
Abstract Let (M,gλ) be a ?2-family of complete convex-cocompact metrics with pinched negative sectional curvatures on a fixed manifold. We show that the topological entropy htop(gλ) of the geodesic flow is a ?1 function of λ and we give an explicit formula for its derivative. We apply this to show that if ρλ(Γ)⊂PSL2(ℂ) is an analytic family of convex-cocompact faithful representations of a Kleinian group Γ, then the Hausdorff dimension of the limit set Λρλ(Γ) is a ?1 function of λ. Finally, we give a variation formula for Λρλ (Γ).