Gauge-invariant dressed fermion propagator in massless QED_3

Details Gauge-invariant dressed fermion propagator in massless QED_3 Gauge-invariant dressed fermion propagator in massless QED_3

2005-10-06

arxiv.org/abs/hep-th/0510057v2

Phys.Lett.B636:68-74,2006

Physics

High Energy Physics

High Energy Physics - Theory

10 pages; references added; minor changes in text

Scientific paper

10.1016/j.physletb.2006.02.068

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.

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