English

Punctured parabolic cylinders in automorphisms of $\mathbb{C}^{2}$

Complex Variables 2020-07-21 v2 Dynamical Systems

Abstract

We show the existence of automorphisms FF of C2\mathbb{C}^{2} with a non-recurrent Fatou component Ω\Omega biholomorphic to C×C\mathbb{C}\times\mathbb{C}^{*} that is the basin of attraction to an invariant entire curve on which FF acts as an irrational rotation. We further show that the biholomorphism ΩC×C\Omega\to\mathbb{C}\times\mathbb{C}^{*} can be chosen such that it conjugates FF to a translation (z,w)(z+1,w)(z,w)\mapsto(z+1,w), making Ω\Omega a parabolic cylinder as recently defined by L.~Boc Thaler, F.~Bracci and H.~Peters. FF and Ω\Omega are obtained by blowing up a fixed point of an automorphism of C2\mathbb{C}^{2} with a Fatou component of the same biholomorphic type attracted to that fixed point, established by F.~Bracci, J.~Raissy and B.~Stens{\o}nes. A crucial step is the application of the density property of a suitable Lie algebra to show that the automorphism in their work can be chosen such that it fixes a coordinate axis. We can then remove the proper transform of that axis from the blow-up to obtain an FF-stable subset of the blow-up that is biholomorphic to C2\mathbb{C}^{2}. Thus we can interpret FF as an automorphism of C2\mathbb{C}^{2}.

Keywords

Cite

@article{arxiv.1909.00765,
  title  = {Punctured parabolic cylinders in automorphisms of $\mathbb{C}^{2}$},
  author = {Josias Reppekus},
  journal= {arXiv preprint arXiv:1909.00765},
  year   = {2020}
}

Comments

10 pages, 1 figure, previously titled "Punctured non-recurrent Siegel cylinders in automorphisms of $\mathbb{C}^{2}$"