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The vacuum component of the
Universe is investigated in both the quantum and the classical regimes of its
evolution. The associated vacuum energy density was reduced by more than 78
orders of magnitude in 10-6 sec in the quantum regime and by nearly
45 orders of magnitude in 4 × 1017 sec in the classical regime. The
vacuum energy was spent for the organization of new microstates during the
expansion of the Universe. In the quantum regime, phase transitions were more
effective in reducing the vacuum energy than in producing new microstates. Both
of these phenomena have been recorded in the history of the Universe. Herein,
the need for the evolution of the Universe’s vacuum component is discussed.
Indeed, through this evolution, all 123 crisis orders of dark energy are
reduced by conventional physical processes. A table of the vacuum energy’s
evolution as the function of red shift and a short discussion about vacuum
stability are presented.