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nlin.CD2009★ 50 cited
Exceptional points in the spectra of atoms in external fields
Holger Cartarius, Jörg Main, Günter Wunner
We investigate exceptional points, which are branch point singularities of two resonance eigenstates, in spectra of the hydrogen atom in crossed external electric and magnetic fiel…
nlin.CD2004★ 8 cited
Photoabsorption spectra of the diamagnetic hydrogen atom in the transition regime to chaos: Closed orbit theory with bifurcating orbits
T. Fabcic, J. Main, T. Bartsch +1
With increasing energy the diamagnetic hydrogen atom undergoes a transition from regular to chaotic classical dynamics, and the closed orbits pass through various cascades of bifur…