English

Teichmuller distance for some polynomial-like maps

Dynamical Systems 2016-09-06 v1

Abstract

In this work we will show that the Teichm\"{u}ller distance for all elements of a certain class of generalized polynomial-like maps (the class of off-critically hyperbolic generalized polynomial-like maps) is actually a distance, as in the case of real polynomials with connected Julia set, as studied by Sullivan. This class contains several important classes of generalized polynomial-like maps, namely: Yoccoz, Lyubich, Sullivan and Fibonacci. In our proof we can not use external arguments (like external classes). Instead we use hyperbolic sets inside the Julia sets of our maps. Those hyperbolic sets will allow us to use our main analytic tool, namely Sullivan's rigidity Theorem for non-linear analytic hyperbolic systems. Lyubich has constructed a measure of maximal entropy measure mm on the Julia set of any rational function ff. Zdunik classified exactly when the Hausdorff dimension of mm equals the Hausdorff dimension of the Julia set. We show that the strict inequality holds if ff is off-crititcally hyperbolic, except for Chebyshev polynomials. This result is a particular case of Zdunik's result if we consider ff as a polynomial, but is an extension of Zdunik's result if ff is a generalized polynomial-like map. The proof follows from the non-existence of invariant affine structure.

Keywords

Cite

@article{arxiv.math/9601214,
  title  = {Teichmuller distance for some polynomial-like maps},
  author = {Eduardo A. Prado},
  journal= {arXiv preprint arXiv:math/9601214},
  year   = {2016}
}