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arXiv · 0807.3398

Torsion-induced spin precession

Morteza Mohseni
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Abstract

We investigate the motion of a spinning test particle in a spatially-flat FRW-type space-time in the framework of the Einstein-Cartan theory. The space-time has a torsion arising from a spinning fluid filling the space-time. We show that for spinning particles with nonzero transverse spin components, the torsion induces a precession of particle spin around the direction of the fluid spin. We also show that a charged spinning particle moving in a torsion-less spatially-flat FRW space-time in the presence of a uniform magnetic field undergoes a precession of a different character.

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Morteza Mohseni. 2008-07-22. Torsion-induced spin precession. https://doi.org/10.1140/epjc%2Fs10052-008-0693-4

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