A model of gravitation with global U(1)-symmetry

Abstract

It is shown that an embedding of the general relativity 4−space into a flat 12−space gives a model of gravitation with the global U(1)−symmetry and the discrete D1−one. The last one may be transformed into the SU(2)−symmetry of the unified model, and the demand of independence of U(1)− and SU(2)−transformations leads to the estimate sin2θmin=0,20 where θmin is an analog of the Weinberg angle of the standard model.