Physical Review Letters · 1969 · 46 citations · 20 references
Natural SciencesPhysicsAtomic PhysicsMathematical PhysicsTheoretical PhysicsAb Initio MethodsMany-body PhysicsPerturbation TheoryEquation-of-motion Excitation EnergiesExcitationMany-body DynamicsMany-body EffectsMany-body InteractionsMany-body Perturbation TheoryPerturbation Theory In Atomic SystemsTime-dependent Perturbation Theory
A many-body approach for the calculation of time-dependent properties of atoms is developed and applied to helium atom. The refractive indices and excitation energies so obtained are in excellent agreement with experiment.
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Hugh P. Kelly · Physical Review · 1963 · 525 citations · Full text
Many-Body Perturbation Theory Applied to Atoms
Hugh P. Kelly · Physical Review · 1964 · 502 citations
Constantine Mavroyannis, M. J. Stephen · Molecular Physics · 1962 · 324 citations
Natural Sciences, Chemistry, Physics +17
Charles Schwartz · Physical Review · 1961 · 264 citations