Key points are not available for this paper at this time.
It is shown that if the photon propagator is set equal to 1{k^2} in the expression for the vacuum polarization, then Z₃^_^-1 (where Z₃ is the photon wave-function renormalization constant) diverges like a single power of the logarithm of an ultraviolet cutoff in all orders of perturbation theory. The implication of this result upon the possible finiteness of ordinary quantum electrodynamics is discussed.
Johnson et al. (Sat,) studied this question.