Abstract:We determine the critical fermion flavor for dynamical chiral symmetry breaking in three-dimensional quantum electrodynamics using nonlocal gauge (gauge parameter depends on the momentum or coordinate). The coupled Dyson-Schwinger equations of the fermion and gauge boson propagators are considered in the vicinity of the critical point. By using the transverse vertex proposed by Bashir et al., we show that for a variety of the transverse vertices, the critical flavor is still 128/3π 2 , the same as using the ba… Show more
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