Abstract
We study nonconservative quasi-periodic (with \(m\) frequencies) perturbations of two-dimensional Hamiltonian systems with nonmonotonic rotation. It is assumed that the perturbation contains the so-called parametric terms. The behavior of solutions in the vicinity of degenerate resonances is described. Conditions for the existence of resonance \((m+1)\)-dimensional invariant tori for which there are no generating ones in the unperturbed system are found. The class of perturbations for which such tori can exist is indicated. The results are applied to the asymmetric Duffing equation under a parametric quasi-periodic perturbation.
Notes
Some additional conditions are required, see [25].
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Funding
This paper was carried out within the framework of the Russian Ministry of Science and Education [FSWR-2020-0036]. The authors acknowledge support from the Russian Science Foundation under the grant 24-21-00050 (Sections 2–3). The numerical simulations in Section 4 were supported by the RSF (grant 19-11-00280) (Morozov K. E.).
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MSC2010
34C15, 34C27, 34C37
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Morozov, K.E., Morozov, A.D. Quasi-Periodic Parametric Perturbations of Two-Dimensional Hamiltonian Systems with Nonmonotonic Rotation. Regul. Chaot. Dyn. 29, 65–77 (2024). https://doi.org/10.1134/S1560354724010052
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DOI: https://doi.org/10.1134/S1560354724010052