Geodesic
Compact expression for a~bilinear combination of Dirac spinors in terms of world tensors
Teoretičeskaâ i matematičeskaâ fizika, Tome 101 (1994) no. 3, pp. 384-390

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A compact expression is obtained for the product of two Dirac spinors in the form of a linear combination of 16 Dirac matrices. A convenient form of expression of the results, permitting its use for analytic calculations of the amplitudes of many-particle processes, is found. It is shown that a bilinear combination of Dirac spinors can be expressed in terms of the 4-momentum vectors and spins of the corresponding particles together with a common phase factor. 
@article{TMF_1994_101_3_a6,
     author = {R. N. Rogalev},
     title = {Compact expression for a~bilinear combination of {Dirac} spinors in terms of world tensors},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {384--390},
     publisher = {mathdoc},
     volume = {101},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1994_101_3_a6/}
}
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R. N. Rogalev. Compact expression for a~bilinear combination of Dirac spinors in terms of world tensors. Teoretičeskaâ i matematičeskaâ fizika, Tome 101 (1994) no. 3, pp. 384-390. http://geodesic.mathdoc.fr/item/TMF_1994_101_3_a6/