Curvature-spin coupling from the semi-classical limit of the Dirac equation

Abstract

The notion of a classical particle is inferred from Dirac quantum fields on a curved space-time, by an eikonal approximation and a localization hypothesis for amplitudes. This procedure allows to define a semi-classical version of the spin-tensor from internal quantum degrees of freedom, which has a Papapetrou-like coupling with the curvature.

4 pages, Proceedings of the II Stueckelberg workshop

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