Gauge Covariant Fermion Propagator in the Presence of Arbitrary External Gauge Field and Its Schwinger--Dyson Equation |
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| Authors: | ZHANG Ying WANG Qing |
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| Affiliation: | Department of Physics, Tsinghua University, Beijing 100084Center for High Energy Physics, Tsinghua University, Beijing 100084 |
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| 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. |
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| Keywords: | 11.15.Tk 12.20.-m 12.20.Ds 12.38.Lg |
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