Gauge-invariant dressed fermion propagator in massless QED_3
arXiv:hep-th/0510057 · doi:10.1016/j.physletb.2006.02.068
Abstract
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.
arXiv comment10 pages; references added; minor changes in text
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