A new look at the problem of gauge invariance in quantum field theory
arXiv:0706.2830 · doi:10.1088/0031-8949/76/1/013
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 non-gauge 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 non-gauge invariant results.
arXiv commentAccepted by Physica Scripta. 27 pages
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- Negative Energies and Field Theory
- Some remarks on point split commutators
- The Vacuum Polarization tensor in 1+1 dimensional space-time
- Why do non-gauge invariant terms appear in the vacuum polarization tensor?
- Second quantization and gauge invariance
- On wave functional in QED
- On the energy of physical states in QED in the convariant gauge