Salas, J.P. and Simonovic, N.S. (2000) Rydberg States of the Hydrogen Atom in the Instantaneous van der Waals Potential: Quantum Mechanical, Classical and Semiclassical Treatment. Journal of Physics B: Atomic, Molecular and Optical Physics, 33, 291.
https://doi.org/10.1088/0953-4075/33/3/301

has been cited by the following article:

• TITLE: On the Regularity and Chaos of the Hydrogen Atom Subjected to External Fields

  AUTHORS: Jaouad Kharbach, Walid Chatar, Mohamed Benkhali, Abdellah Rezzouk, Mohammed Ouazzani-Jamil

  KEYWORDS: Hydrogen Atom, Zeeman Effect, Stark Effect, Van Der Waals Interaction, Hamiltonian System, Integrability, Bifurcation, Chaos, Poincaré Surfaces of Section

  JOURNAL NAME: International Journal of Modern Nonlinear Theory and Application, Vol.7 No.2, June 29, 2018

  ABSTRACT: In this paper, the integrable classical case of the Hydrogen atom subjected to three static external fields is investigated. The structuring and evolution of the real phase space are explored. The bifurcation diagram is found and the bifurcations of solutions are discussed. The periodic solutions and their associated periods for singular common-level sets of the first integrals of motion are explicitly described. Numerical investigations are performed for the integrable case by means of Poincaré surfaces of section and comparing them with nearby living nonintegrable solutions, all generic bifurcations that change the structure of the phase space are illustrated; the problem can exhibit regularity-chaos transition over a range of control parameters of system.