Normal forms and uniform approximations for bridge orbit bifurcations

Details Normal forms and uniform approximations for bridge orbit bifurcations Normal forms and uniform approximations for bridge orbit bifurcations

2008-05-26

arxiv.org/abs/0805.3755v3

J. Phys. A 41, 385207 (2008)

Nonlinear Sciences

Chaotic Dynamics

25 pages, 18 figures, version published in Journal of Physics A: Mathematical and Theoretical

Scientific paper

10.1088/1751-8113/41/38/385207

We discuss various bifurcation problems in which two isolated periodic orbits exchange periodic ``bridge'' orbit(s) between two successive bifurcations. We propose normal forms which locally describe the corresponding fixed point scenarios on the Poincar\'e surface of section. Uniform approximations for the density of states for an integrable Hamiltonian system with two degrees of freedom are derived and successfully reproduce the numerical quantum-mechanical results.

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