A Characterization of hyperbolic potentials of rational maps
arXiv:1109.0646
Abstract
Consider a rational map of degree at least 2 acting on its Julia set , a Hölder continuous potential and the pressure \sup_{J(f)}ϕ<P(f,phi)ϕf$, in terms of the expanding properties of the corresponding equilibrium states. A direct consequence of this result is that for a nonuniformly hyperbolic rational map every Hölder continuous potential has a unique equilibrium state and that this measure is exponentially mixing.
A throughout revision of the first version, incorporating a new author, a more precise title, a new section devoted to hyperbolic potentials of a general topological dynamical system and a shortened version of the main technical result (Key Lemma)