Implementation of Dipole Type Bosonic BRST Symmetry in QED  Reconstruction of Gaugeon Theory of QED 
Abstract
It is shown in QED that we can incorporate dipole type bosonic BRST symmetry with gauge function Λ satisfying Box^{2}Λ = 0 in quite the same way as bosonic BRST symmetry is implemented. Lagrangian so defined turns out to be that of Yokoyama's gaugeon formalism. However diffrence in formulating the theory yields remarkable differences in its properties. Gaugeon and its conjugate fields come to transform differently in order for the gauge transformations to be residual ones with infinitesimal generator. We need not classify the gaugeon theory into types I and II because constituent operators of genuine QED transform such that values of the gauge parameter of NakanishiLautrup formalism are freely altered. It follows that equivalence evidently holds among the one parameter covariant gauges and hence the difficulty inherent in NakanishiLautrup formalism is resolved.
 Publication:

Progress of Theoretical Physics
 Pub Date:
 January 1995
 DOI:
 10.1143/ptp/93.1.185
 Bibcode:
 1995PThPh..93..185N