V. Lanchares et al., BIFURCATIONS IN THE HYDROGEN-ATOM IN THE PRESENCE OF A CIRCULARLY-POLARIZED MICROWAVE FIELD AND A STATIC MAGNETIC-FIELD, Physical review. A, 56(3), 1997, pp. 1839-1843
In a classical model, the dynamics of the hydrogen atom subjected to a
circularly polarized microwave field and a magnetic field is shown to
belong to the family of so-called biparametric quadratic Hamiltonians
. The energy-level structure is studied in terms of the parametric bif
urcations.