Coupling between quantal and classical degrees of freedom in atomic collisions

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9 Scopus citations


The authors address the question of how classical and quantal degrees of freedom interact in time-dependent situations. From a variational principle, a set of self-consistently coupled Schrodinger (electronic)-Hamilton (nuclear) equations are derived and discussed. The equations conserve total energy and momentum and reduce to the Born-Oppenheimer approximation in the adiabatic limit. In their formulation, the nuclear trajectories carry quantal information in the WKB sense. Current applications to simulations of atomic collisions are mentioned.

Original languageEnglish (US)
Article number001
Pages (from-to)L647-L653
JournalJournal of Physics B: Atomic and Molecular Physics
Issue number20
StatePublished - Dec 1 1987

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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