Abstract:
A new class of gauge-invariant fields is introduced. For the gauge-invariant propagator
of a spinor field the analogue of the Dyson–Schwinger equations is derived.
With the help of these equations as well as the functional integration method it is
shown that the gauge-invariant spinor propagator has a simple pole singularity in the
infrared region.
Citation:
N. B. Skachkov, I. L. Solovtsov, O. Yu. Shevchenko, “Infrared asymptotic behavior of gauge-invariant propagator in quantum electrodynamics”, TMF, 71:1 (1987), 54–66; Theoret. and Math. Phys., 71:1 (1987), 376–385