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arXiv · 0907.4367

Spin dynamics in gravitational fields of rotating bodies and the equivalence principle

Yuri N. Obukhov·Alexander J. Silenko·Oleg V. Teryaev
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Abstract

We discuss the quantum and classical dynamics of a particle with spin in the gravitational field of a rotating source. A relativistic equation describing the motion of classical spin in curved spacetimes is obtained. We demonstrate that the precession of the classical spin is in a perfect agreement with the motion of the quantum spin derived from the Foldy-Wouthuysen approach for the Dirac particle in a curved spacetime. We show that the precession effect depends crucially on the choice of a tetrad. The results obtained are compared to the earlier computations for different tetrad gauges.

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Yuri N. Obukhov, Alexander J. Silenko, Oleg V. Teryaev. 2009-09-12. Spin dynamics in gravitational fields of rotating bodies and the equivalence principle. https://doi.org/10.1103/physrevd.80.064044

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