摘要Gauge covariance for Green's functions of a gauge theory through a fermion propagator in the presence of arbitrary external gauge field is proven and a formalism of gauge and Lorentz covariant Schwinger--Dyson equation for the fermion propagator with external gauge field is built up within ladder approximation.
Abstract：Gauge covariance for Green's functions of a gauge theory through a fermion propagator in the presence of arbitrary external gauge field is proven and a formalism of gauge and Lorentz covariant Schwinger--Dyson equation for the fermion propagator with external gauge field is built up within ladder approximation.
ZHANG Ying;WANG Qing. Gauge Covariant Fermion Propagator in the Presence of Arbitrary External Gauge Field and Its Schwinger--Dyson Equation[J]. 中国物理快报, 2008, 25(4): 1227-1230.
ZHANG Ying, WANG Qing. Gauge Covariant Fermion Propagator in the Presence of Arbitrary External Gauge Field and Its Schwinger--Dyson Equation. Chin. Phys. Lett., 2008, 25(4): 1227-1230.
2008, Vol. 25 
