Abstract
In the more recent literature on cosmological evolutions of the universe, the cosmic vacuum energy has become a nonrenouncable ingredient. The cosmological constant Λ, first invented by Einstein, but later also rejected by him, presently experiences an astonishing revival. Interestingly enough, it acts like a constant vacuum energy density would also do. Namely, it has an accelerating action on cosmic dynamics, without which, as it appears, presently obtained cosmological data cannot be conciliated with theory. As we are going to show in this review, however, the concept of a constant vacuum energy density is unsatisfactory for very basic reasons because it would claim for a physical reality that acts upon spacetime and matter dynamics without itself being acted upon by spacetime or matter.
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Fahr, HJ., Heyl, M. Cosmic vacuum energy decay and creation of cosmic matter. Naturwissenschaften 94, 709–724 (2007). https://doi.org/10.1007/s00114-007-0235-1
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DOI: https://doi.org/10.1007/s00114-007-0235-1