MG11 
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On the geometrization of the electro-magnetic interaction for a spinning particle

We outline that, in a Kaluza-Klein framework, not only the electro-magnetic field can be geometrized, but also the dynamics of a charged spinning particle can be inferred from the motion in a 5-dimensional space-time. This result is achieved by the dimensional splitting of Papapetrou equations and by proper identifications of four-dimensional quantities. Then, since in such a context an electric dipole moment arises, we provide explanations for the induced parity and time-reversal violations consequently implied in a quantum framework.

The electro-weak model as a phenomenological limit of a Kaluza-Klein

We consider Kaluza-Klein theories as candidates for the unification of gravity and other interactions. In particular, the electro-weak model boson component is inferred from the extra-dimensional degrees of freedom of an 8-dimensional space-time. Then, we fix how to reproduce geometrically the interaction between Standard Model fermions and gauge bosons, in the low energy limit.