2 papers
hep-ph2002
A Deduced Feynman Rule for Calculating Retarded and Advanced Green function in Closed Time Path Formalism
Jun Xiao, Enke Wang
Based on the closed time path formalism, a new Feynman rule for directly calculating the retarded and advanced Green functions is deduced. This Feynman rule is used to calculate th…
hep-ph2001
Bremsstrahlung Radiation as Coherent State in Thermal QED
Enke Wang, Jun Xiao, Hanzhong Zhang
Based on fully finite temperature field theory we investigate the radiation probability in the bremsstrahlung process in thermal QED. It turns out that the infrared divergences res…