Effective Weinberg--Salam Model From Higher Dimensions

Details Effective Weinberg--Salam Model From Higher Dimensions Effective Weinberg--Salam Model From Higher Dimensions

1996-05-06

arxiv.org/abs/hep-th/9605034v1

Physics

High Energy Physics

High Energy Physics - Theory

Talk preseted at the First Mexican School on Gravitation and Mathematical Physics, in Guanajuato, Mexico, December of 1994. 10

Scientific paper

We consider an 8--dimensional gravitational theory, which possesses a principle fiber bundle structure, with Lorentz--scalar fields coupled to the metric. One of them plays the role of a Higgs field and the other one that of a dilaton field. The effective cosmological constant is interpreted as a Higgs potential. The Yukawa couplings are introduce by hand. The extra dimensions constitute a $SU(2)_{L} \times U(1)_{Y} \times SU(2)_{R}$ group manifold. Dirac fields are coupled to the potentials derived from the metric. As result, we obtain an effective four--dimensional theory which contains all couplings of a Weinberg--Salam--Glashow theory in a curved space-time. The masses of the gauge bosons and of the first two fermion families are given by the theory.

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