English

Cubic polynomials with a 2-cycle of Siegel disks

Dynamical Systems 2024-10-23 v1 Complex Variables

Abstract

Under conjugation by affine transformations, the dynamical moduli space of cubic polynomials ff with a 22-cycle of Siegel disks is parameterized by a three-punctured complex plane as a degree-22 cover. Assuming the rotation number of f2f^2 on the Siegel disk is of bounded type, we show that on the three-punctured complex plane, the locus of the cubic polynomials with both finite critical points on the boundaries of the Siegel disks on the 22-cycle is comprised of two arcs, corresponding to the cases with two critical points on the boundary of the same Siegel disk, and a Jordan curve, corresponding to the cases with two critical points on the boundaries of different Siegel disks.

Keywords

Cite

@article{arxiv.2410.16728,
  title  = {Cubic polynomials with a 2-cycle of Siegel disks},
  author = {Yuming Fu and Jun Hu and Oleg Muzician},
  journal= {arXiv preprint arXiv:2410.16728},
  year   = {2024}
}