Dynamics Seminar
April 30, 2008
Sarah C. Koch
A new link between Teichmüller theory and complex dynamics
Inspired by Thurston's theorem of the characterization of rational
maps, J. H. Hubbard posed the "twisted rabbit" problem. This problem
was recently solved by L. Bartholdi and V. Nekrashevych using original
techniques involving iterated monodromy groups. Part of their solution
contains the construction of a map on a certain moduli space. We
discuss Thurston's theorem and present the "twisted rabbit" problem.
We then generalize the construction of these Bartholdi-Nekrashevych
maps and discuss their dynamical significance.