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RESEARCH PRODUCT
On the Physical Propagators of QED
David McmullanMartin Lavellesubject
PhysicsHigh Energy Physics - TheoryNuclear and High Energy PhysicsPhotonFermionic fieldHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyPropagatorFOS: Physical sciencesElectronInvariant (physics)Transverse planesymbols.namesakeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Theory (hep-th)Quantum electrodynamicssymbolsGauge theorydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-06-25 |