Hans Koch
Existence of Critical Invariant Tori
(6121K, plain TeX, Section.6.tgz)

ABSTRACT.  We consider analytic Hamiltonian systems with two degrees 
of freedom, and prove that every Hamiltonian on the strong local stable 
manifold of the renormalization group fixed point obtained in [26] has 
a non-differerentiable golden invariant torus (conjugacy to a linear flow).