2015/07/02 by Noorbala, Mahdiyar
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.1507.00580
We begin by studying a very simple Hamiltonian for Maxwell's equations that has no gauge fields and is made entirely of the electromagnetic fields. We then show that this theory cannot be quantized. We also show that no other such simple theory that only involves the electromagnetic fields can be quantized. This gives further evidence for the important role of gauge fields in QED.