Monday, May 20, 2013

1305.3974 (M. Avendaño-Camacho et al.)

Higher order corrections to adiabatic invariants of generalized
slow-fast Hamiltonian systems

M. Avendaño-Camacho, J. A. Vallejo, Yu. Vorobiev
We present a coordinate-free approach for constructing approximate first integrals of generalized slow-fast Hamiltonian systems, based on the global averaging method on parameter-dependent phase spaces with $\mathbb{S}^1 -$symmetry. Explicit global formulas for approximate second-order first integrals are derived. As examples, we analyze the case quadratic in the fast variables (in particular, the elastic pendulum), and the charged particle in a slowly-varying magnetic field.
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