Structure of the fermion propagator in QED3

Details Structure of the fermion propagator in QED3 Structure of the fermion propagator in QED3

2008-11-12

arxiv.org/abs/0811.1827v5

Physics

High Energy Physics

High Energy Physics - Theory

7 pages,6 figures, in the proceedings of LIGHTCONE 2008.typos in eq(3.3) are corrected

Scientific paper

Minkowski structure of the Fermion propagator in QED$_{2+1}$ is evaluated using dispersion like method Including massive fermion loop to the photon spectral function there is no infrared divergences in the gauge d=-1.Screening effects suppress the chiral order parmeter for small numbers of fermion flavour N.We evaluate the order parameter as a function of coupling constant c and N.There exsists a critical region where the chiral symmetry is dynamically broken.

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