Infrared Asymptotics of a Gauge-Invariant Propagator in Quantum Electrodynamics

摘要

A new class of the gauge-invariant field is introduced. For the gauge-invariant propagator of a spinor field the analog of the Dyson-Schwinger equations is derived. By using 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. 20 refs. (Atomindex citation 17:052558)