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The symmetric 1:2 resonance

By Antonella Marchesiello and Giuseppe Pucacco


This paper illustrates the application of Lie transform normal-form theory to the construction of the 1:2 resonant normal form corresponding to a wide class of natural Hamiltonian systems. We show how to compute the bifurcations of the main periodic orbits in a potential with double reflection symmetries. The stability analysis of the normal modes and of the periodic orbits in general position allows us to get overall informations on the phase-space structure of systems in which this resonance is dominating. As an example we apply these results to a class of models useful as galactic potentials

Topics: Nonlinear Sciences - Chaotic Dynamics, Astrophysics - Instrumentation and Methods for Astrophysics
Publisher: 'Springer Science and Business Media LLC'
Year: 2013
DOI identifier: 10.1140/epjp/i2013-13021-5
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