Geodesic
A covariant method for calculating amplitudes of processes involving polarized spin 1/2 particles. Calculation of the interference terms in their cross sections
Teoretičeskaâ i matematičeskaâ fizika, Tome 96 (1993) no. 1, pp. 96-108 
A. V. Bondarev. A covariant method for calculating amplitudes of processes involving polarized spin 1/2 particles. Calculation of the interference terms in their cross sections. Teoretičeskaâ i matematičeskaâ fizika, Tome 96 (1993) no. 1, pp. 96-108. http://geodesic.mathdoc.fr/item/TMF_1993_96_1_a6/
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     author = {A. V. Bondarev},
     title = {A~covariant method for calculating amplitudes of processes involving polarized spin~1/2 particles. {Calculation} of the interference terms in their cross sections},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {96--108},
     year = {1993},
     volume = {96},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_96_1_a6/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A covariant method is proposed for calculating the amplitudes of processes involving polarized spin 1/2 particles. It is suitable for calculating the interference terms in the cross sections of such processes. As an illustration, expressions are given for the amplitudes of electron-electron scattering in the lowest order of perturbation theory and expressions for the electron current in the case of emission of two bremsstrahlung photons in the ultrarelativistic limit.

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