Infrared behaviour of the fermion propagator in unquenched QED$_3$ with finite threshold effects

Details Infrared behaviour of the fermion propagator in unquenched QED$_3$ with finite threshold effects Infrared behaviour of the fermion propagator in unquenched QED$_3$ with finite threshold effects

2008-08-19

arxiv.org/abs/0808.2508v4

Proceedings of The CONTINUOUS ADVANCES IN QCD 2008,361-372

Physics

High Energy Physics

High Energy Physics - Theory

12pages,6figures,Rev.tex4,typos in (13),(17),(18) are corrected

Scientific paper

To remove the linear infrared divergences in quenched approximation we
include the massive fermion loop to the photon spectral function.Spectral
function of fermion has no one particle singularity if we fix the anomalous
dimension to be unity.In the case of $N$ flavour,$N$ dependence of order
parameter is mild which may be due to screening effects.

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