Calculating periodic orbits of the Hénon–Heiles system

Abstract

This work is divided to two parts; the first part analyzes the features of Hénon–Heiles’s potential and finding the energy levels for bounded and unbounded motions. The critical points are explored in different phase spaces from the classical potential to the generalized one. In the second part, the possible solutions of the generalized (fifth-degree) Hénon–Heiles system are analyzed using the averaging theory. Two consequent transformations are used to set the Hamiltonian of this system in standard form for applying the averaging theory. In this context, eight solutions are found, where one of them is not convenient for the proposed assumptions, and the other seven solutions are proper and adequate to represent seven periodic orbits for the generalized Hénon–Heiles dynamical system, which has at least seven periodic orbits.

Second-kind symmetric periodic orbits for planar perturbed Kepler problems and applications

“…There are considerable works that have contributed to find the periodic solution for perturbations of an integrable problem (see [1, 7]). For a perturbed Kepler problem, some of these works apply the method of average of first kind (see, e.g., [3, 4, 14, 25, 27]).…”