Talk page

Title:
Emergence of wandering domains

Speaker:
Pierre Berger

Abstract:
In a joint work with Sebastien Biebler, we show the existence of a locally dense set of real polynomial automorphisms of $\mathbb C^2$ displaying a wandering Fatou component; in particular this solves the problem of their existence, reported by Bedford and Smillie in 1991. These wandering Fatou components have non-empty real trace and their statistical behavior is historical with high emergence. The proof follows from a real geometrical model which enables us to show the existence of an open and dense set of $C^r$-families of surface diffeomorphisms in the Newhouse domain, each of which displaying a historical, high emergent, wandering domain at a dense set of parameters, for every $2\le r\le \infty$ and $r=\omega$. Hence, this also complements the recent work of Kiriki and Soma, by proving the last Taken's problem in the $C^{\infty}$ and $C^\omega$-case.

Link:
http://scgp.stonybrook.edu/video_portal/video.php?id=4542

Workshop:
Simons- Program: Renormalization and universality in Conformal Geometry, Dynamics, Random Processes, and Field Theory