title: Mechanism for the intermittent route to strange nonchaotic attractors.
abstract: Intermittent strange nonchaotic attractors (SNAs) appear typically in quasiperiodically forced period-doubling systems. As a representative model, we consider the quasiperiodically forced logistic map and investigate the mechanism for the intermittent route to SNAs using rational approximations to the quasiperiodic forcing. It is found that a smooth torus transforms into an intermittent SNA via a phase-dependent saddle-node bifurcation when it collides with a new type of "ring-shaped" unstable set.
authors.affiliation: Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, USA. sykim@kangwon.ac.kr
authors.forename: Sang-Yoon
authors.initials: SY
authors.lastname: Kim
authors.forename: Woochang
authors.initials: W
authors.lastname: Lim
authors.forename: Edward
authors.initials: E
authors.lastname: Ott