On the Physical Propagators of QED

Details On the Physical Propagators of QED On the Physical Propagators of QED

1993-06-25

arxiv.org/abs/hep-th/9306131v1

Phys.Lett. B312 (1993) 211-214

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 2 figures (not included, may be obtained from the authors), MZ-TH/93-05, DIAS-STP-93-05

Scientific paper

10.1016/0370-2693(93)90512-G

The true variables in QED are the transverse photon components and Dirac's physical electron, constructed out of the fermionic field and the longitudinal components of the photon. We calculate the propagators in terms of these variables to one loop and demonstrate their gauge invariance. The physical electron propagator is shown not to suffer from infrared divergences in any gauge. In general, all physical Green's functions are gauge invariant and infrared-finite.

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