Gauge-invariant dressed fermion propagator in massless QED3 |
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| Authors: | Indrajit Mitra Raghunath Ratabole H.S. Sharatchandra |
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| Affiliation: | 1. Theory Group, Saha Institute of Nuclear Physics, 1/AF Bidhan-Nagar, Kolkata 700064, India;2. The Institute of Mathematical Sciences, C.I.T. Campus, Taramani P.O., Chennai 600113, India |
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| Abstract: | The infrared behaviour of the gauge-invariant dressed fermion propagator in massless QED3 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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| Keywords: | 11.15.-q |
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