Geodesic
Covariant formalism for equal-time commutators
Teoretičeskaâ i matematičeskaâ fizika, Tome 15 (1973) no. 1, pp. 20-42 
Yu. M. Shirokov. Covariant formalism for equal-time commutators. Teoretičeskaâ i matematičeskaâ fizika, Tome 15 (1973) no. 1, pp. 20-42. http://geodesic.mathdoc.fr/item/TMF_1973_15_1_a1/
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     url = {http://geodesic.mathdoc.fr/item/TMF_1973_15_1_a1/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

For equal-time commutators of general form with an arbitrary finite number of Schwinger terms a manifestly covariant formalism is developed. In this formalism the construction of relativistically invariant systems of equal-time commutators reduces to standard manipulations with four-dimensional tensor indices. Specific covariant properties of the equaltime commutators of conserved currents are obtained. Examples are considered of the “covariantization” of equal-time commutators; these examples are of not only methodological but also independent significance.

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