Gauge-invariant dressed fermion propagator in massless QED_3
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
The infrared behaviour of the gauge-invariant dressed fermion propagator in massless QED_3 is discussed for three choices of dressing. It is found that only the propagator with the isotropic (in three Euclidean dimensions) choice of dressing is acceptable as the physical fermion propagator. It is explained that the negative anomalous dimension of this physical fermion does not contradict any field-theoretical requirement.
10 pages; references added; minor changes in text
10 pages; references added; minor changes in text