When quantum electrodynamics, the quantum field theory of electrons and photons, was being developed after World War II, one of the major challenges for theorists was calculating a value for the Lamb ...

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Department of Pure and Applied Chemistry, University of Calabar, Calabar, Nigeria. The bound state solutions of the Dirac equation are only possible for some potentials of physical interest [1-5].

It was a strange way to complete a first.