Standard model in the early universe

A new hypothesis is put forward that the gauge group of the Standard Model becomes simpler with increasing temperature of the Universe, i.e. when moving back in time to the moment of its occurrence. It is assumed that this simplification is achieved by contracting the gauge group with the contraction parameter, which decreases with increasing temperature. In this case, the Lagrangian of the Standard Model is divided into terms that differ in powers of the contraction parameter. This makes it possible to arrange in time the stages of development of the Standard Model as the Universe cools. The evolution of the properties of elementary particles and their interactions, starting from the Planck scale of 1019 GeV, is based on the explicit form of intermediate Lagrangians and explain the development of the Universe from simpler to more complicated structures - and not vice versa. The contraction hypothesis of the gauge group of the Standard Model contradicts the available experimental data on the Higgs boson production cross section.