Quasi-group Symmetries and Evolution of the Universe

It is supposed that the evolution of the Universe is determined by particles whose larger part is in a bound state and they are proved only by means of weak interactions. Because the larger part of boson states is indistinguishable, a reduced set of boson fields is used instead of the full set. With this, it is necessary to take into consideration that in Lagrangian there will appear the constants, playing a role of weighting coefficients, such as 1/G_N, where G_N is the gravitational constant. This makes possible the definition of the space-time as a riemannian variety, whose main tensor is introduced by means of the reduced matrix of density of fields describing the boson states.