DOE Pages — summary generated by Brevi Assistant
Big-bang nucleosynthesis is valuable as a means to constrain the physics of the very early universe and it is the only probe of the radiation-dominated epoch. A fundamental presumption in BBN is that the nuclear velocity circulations obey Maxwell-Boltzmann stats as they perform in stars. One should for that reason the momentum distribution for responding cores from the multicomponent relativistic Boltzmann formula. We think about the cosmological effects of sterilized neutrinos with the masses of 150- 450 MeV. The degeneration of clean and sterile neutrinos changes the thermal background of deep space and impacts the energy density of radiation at the recombination and the big bang nucleosynthesis outcomes. We locate that in a specific model the constraints can be considerably loosened up by presuming a big lepton crookedness in the active neutrinos. In this research, we recommend a model for the initial phase of the advancement of deep space similar to cavitation in a liquid in a negative pressure field. It is presumed that at the phase of inflation, several breaks of the statistics accompany the formation of locations of physical vacuum in which the generation of matter happens. It is shown that the cavitation model can be considered on par with the usually accepted inflationary multiverse model of the Big Bang.
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