On the interaction of massive spinor particles with external electromagnetic and torsion fields

Details On the interaction of massive spinor particles with external electromagnetic and torsion fields On the interaction of massive spinor particles with external electromagnetic and torsion fields

1998-05-21

arxiv.org/abs/hep-th/9805138v1

Phys.Lett. A247 (1998) 21-26

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 7 pages, no figures

Scientific paper

10.1016/S0375-9601(98)00503-9

We explore the Dirac equation in external electromagnetic and torsion fields. Motivated by the previous study of quantum field theory in an external torsion field, we include a nonminimal interaction of the spinor field with torsion. As a consequence, the torsion axial vector and the electromagnetic potential enter the action in a similar form. The existence of an extra local symmetry is emphasized and the Foldy-Wouthuysen transformation is performed to an accuracy of next to the leading order. We also discuss the motion of a classical test particle in a constant torsion field.

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