Critical recurrence in the real quadratic family

Abstract

We study recurrence in the real quadratic family and give a sufficient condition on the recurrence rate $(\delta_n)$ of the critical orbit such that, for almost every nonregular parameter $a$, the set of $n$ such that $\vert F^n(0;a) \vert < \delta_n$ is infinite. In particular, when $\delta_n = n^{-1}$, this extends an earlier result of Avila and Moreira.