Proceedings of the Royal Society of London A Mathematical and Physical Sciences · 1956 · 19 citations · 4 references
Natural SciencesPhysicsAtomic PhysicsQuantum MechanicsTheoretical PhysicsAngular MomentumPerturbation TheoryQuantum Field TheoryRelativistic Quantum MechanicsExpansionMany-body Perturbation TheoryPerturbation Theory In Atomic SystemsQuantum Mechanical Perturbation TheoryQuantum PropagatorRelativistic Electron BeamsRelativistic Electron TransportRelativistic Force
Abstract An expansion of the propagator SF(F) (x2, x1) of a relativistic electron in a central static potential is given. The terms of this expansion correspond to the angular momenta of the electron propagated by this function. Applications to problems concerning heavy atoms are indicated.
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On Gauge Invariance and Vacuum Polarization
Julian Schwinger · Physical Review · 1951 · 7.1K citations
Vacuum Polarization in a Strong Coulomb Field
Eyvind H. Wichmann, N. Kroll · Physical Review · 1956 · 462 citations
Vacuum Polarization in a Strong Coulomb Field
Eyvind H. Wichmann, N. Kroll · Physical Review · 1954 · 30 citations