Abstract
The model of production of ordinary and dark matter in the decay of a hypothetical anti- gravitating medium in the form of a condensate of (zero-momentum) spinless massive particles, which fills the early universe, is proposed. The decays of these massive particles into baryons, leptons, and dark matter particles are caused by some (after-GUT) interaction with the mass scale between the electroweak and grand unification. The observed dark energy is identified with a portion of a condensate which has not decayed up to the instant of measurement. We show that the mass of dark matter particle being close to 5 GeV and the mass of massive particle of a condensate approximately equal to 15 GeV can be extracted from the WMAP and other astrophysical data about the contributions of baryon, dark matter, and dark energy densities to the total matter-energy density budget in our universe. Such a mass of light WIMP dark matter agrees with the observations of CoGeNT, DAMA, and CDMS. The numerical values of the coupling constant of after-GUT interaction and of the decay rate of massive particle of a condensate, as well as other parameters are obtained.
Highlights
The present data of modern cosmology pose the principle question about the origin and nature of massenergy constituents of our universe
The 9-year WMAP and other data [1] indicate that: the spatial geometry of the observed part of our universe is very close to flat; the expansion of the universe is accelerating due to the action of dominating substance called dark energy; the universe is comprised of one third dark matter, which provides the formation of observed structures composed of baryons and leptons, and two thirds dark energy
One can conclude that the observed values of the densities ΩB, ΩDM, and ΩDE in the model of the decays (1) and (2) lead to the values of mass of dark energy particle ∼ 15 GeV and mass of dark matter particle ∼ 5 GeV
Summary
The present data of modern cosmology pose the principle question about the origin and nature of massenergy constituents of our universe. In view of the current dominance of dark energy over all other forms of matter it is reasonable to consider a model in which ordinary and dark matter be decay products of a portion of some primordial antigravitating medium, which fills the universe, under the action of some interaction with gauge coupling between the electroweak and grand unification scales. This interaction leads to the violation of CP-invariance which can cause the baryon asymmetry of the universe.
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