Answers are grounded in this paper and cite their sources.
Starting with the point-charge solutions of Maxwell's equations, a nonlinear modification is developed which results in a conformally invariant system. Nonsingular solutions exist representing discrete neutral and charged states with zero mass. A method of breaking conformal invariance is suggested. The resulting system has a number of properties similar to the conformally invariant one, including the existence of a globally conserved action scalar.
No takes yet. Share an insight, caveat, or question.
H. I. Schiff (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: