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About spin precession in electromagnetic wave

Sergey L. Cherkas

hep-pharXiv:hep-ph/9903336

Abstract

It is shown that two ways of the description of the 1/2-spin precession in a circularly polarized electromagnetic wave: on the basis of the Bargmann-Michel-Telegdi equation and on the basis of the Dirac equation with Pauli term give the same result in the second order on the wave's field for arbitrary wave length.

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