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

  title={Spin dynamics in gravitational fields of rotating bodies and the equivalence principle},
  author={Yuri N. Obukhov and Alexander J. Silenko and Oleg Teryaev},
  journal={Physical Review D},
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… 
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