Kirillov structures and reduction of Hamiltonian systems by scaling and standard symmetries. (English) Zbl 07899488
Summary: In this paper, we discuss the reduction of symplectic Hamiltonian systems by scaling and standard symmetries which commute. We prove that such a reduction process produces a so-called Kirillov Hamiltonian system. Moreover, we show that if we reduce first by the scaling symmetries and then by the standard ones or in the opposite order, we obtain equivalent Kirillov Hamiltonian systems. In the particular case when the configuration space of the symplectic Hamiltonian system is a Lie group \(G\), which coincides with the symmetry group, the reduced structure is an interesting Kirillov version of the Lie-Poisson structure on the dual space of the Lie algebra of \(G\). We also discuss a reconstruction process for symplectic Hamiltonian systems which admit a scaling symmetry. All the previous results are illustrated in detail with some interesting examples.
© 2024 The Author(s). Studies in Applied Mathematics published by Wiley Periodicals LLC.
© 2024 The Author(s). Studies in Applied Mathematics published by Wiley Periodicals LLC.
Keywords:
contact structures; Hamiltonian systems; Kirillov structures; reconstruction process; reduction process; scaling symmetry; standard symmetryReferences:
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