Is Lavelle-McMullan transformation a really new symmetry in QED?
D. K. Park, Hung Soo Kim, Jae Kwan Kim
Abstract
Lavelle-McMullan symmetry of QED is examined at classical and quantum levels. It is shown that Lavelle-McMullan symmetry does not give any new non-trivial information in QED by examining the Ward-Takahashi identities. Being inspired by the examination of Ward-Takahashi identity, we construct the generalized non-local and non-covariant symmetries of QED.
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