Summary
An answer is given to a question asked by Loinger concerning a three-vector constant of the motion for the free Dirac electron.
References
A. Loiger:Nuovo Cimento A,105, 899 (1992).
L. L. Foldy andS. A. Wouthuysen:Phys. Rev.,78, 29 (1950).
L. L. Foldy:Phys. Rev.,102, 568 (1956).
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Pauri, M. On the constants of the motion for the free Dirac particle. Nuov Cim A 106, 427–429 (1993). https://doi.org/10.1007/BF02771456
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DOI: https://doi.org/10.1007/BF02771456