Finite Quantum Electrodynamics
FINITE QUANTUM ELECTRODYNAMICS by Spyros Efthimiades We present a dynamical method, based on the mass variation of intermediate particles, that yields finite scattering amplitudes in QED. We assign a factor 1/(M^2-m^2) to the intermediate particle contribution to the scattering amplitude, where M is the mass produced by the interaction vertex and m is the free mass of the particle. The amplitudes obtained agree with those of renormalized field theory. Furthermore, this method may lead to alternative theories for other kinds of interactions. Because of its directness and simplicity, the dynamical mass method can also serve as an easy introduction to quantum electrodynamics.
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