Immediate renormalization of cubic complex polynomials with empty rational lamination

Abstract

A cubic polynomial $P$ with a non-repelling fixed point $b$ is said to be immediately renormalizable if there exists a (connected) QL invariant filled Julia set $K^{\ast }$ such that $b\in K^{\ast }$. In that case, exactly one critical point of $P$ does not belong to $K^{\ast }$. We show that if, in addition, the Julia set of $P$ has no (pre)periodic cutpoints, then this critical point is recurrent.

26 pages, 1 figure; accepted to a special issue of the MMJ dedicated to Yulij Ilyashenko's 80th Birthday. arXiv admin note: substantial text overlap with arXiv:2102.10325