An increase in the dark-energy effect with time

Abstract

UDC 523.12 1. In this paper, cosmological medium is considered as a set of the following components: dark energy (DE) and nonrelativistic matter (NM). NM consists of cold dark matter and baryon matter. No account is taken here of the forms of energy of the Universe weakly affecting the expansion of space. According to the new experimental data (1), the density of dark energy is 72.5%, and thаt of nonrelativistic matter - 27.5% of the critical density. The results of the experiment (2) show that the dark-energy effect decreases with time. The decrease taking place about two billion years (2) is probably due to the red shift of moving particles alone. Now it is clear that DE is a new weak field consisting of particles referred to as graviphotons (GP) (3). GPs are assumed to be supersymmetrical vector particles of a very low mass and their velocity is close to that of light с. Therefore, DE cannot be identified with cosmological vacuum as it was done in (4). The proportion of media shows that the DE density is in excess of the total density of all other types of space energy. Since DE exhibits antigravitation, currently the Universe is expanding with positive acceleration (4). New experimental data on the Universe make us adjust earlier values (5). This results in the fact that the DE effect increases. Hereinafter use is made of the designations adopted in (6). 2. First, let us study the process of formation of the epoch of DE dominance using the Einstein-Friedmann equation with acceleration (6) for the flat Universe