The problem of gauge invariance in Dirac field theory
Abstract
Quantum field theory is assumed to be gauge invariant. However it is well known that when certain quantities are calculated using perturbation theory the results are not gauge invariant. The nongauge invariant terms have to be removed in order to obtain a physically correct result. In this paper we will examine this problem and determine why a theory that is supposed to be gauge invariant produces nongauge invariant results.
 Publication:

arXiv eprints
 Pub Date:
 June 2003
 arXiv:
 arXiv:quantph/0306071
 Bibcode:
 2003quant.ph..6071S
 Keywords:

 Quantum Physics
 EPrint:
 30 pages  Comments welcome