Unified Description of Dark Energy and Dark Matter

Details Unified Description of Dark Energy and Dark Matter Unified Description of Dark Energy and Dark Matter

2008-10-23

arxiv.org/abs/0810.4311v2

Physics

General Physics

7 pages, no figures, PDF

Scientific paper

Dark energy in the universe is assumed to be vacuum energy. The energy-momentum of vacuum is described by a scale-dependent cosmological constant. The equations of motion imply for the density of matter (dust) the sum of the usual matter density (luminous matter) and an additional matter density (dark matter) similar to the dark energy. The scale-dependent cosmological constant is given up to an exponent which is approximated by the experimentally decided density parameters of dark matter and dark energy. This yields that dark matter is one third of dark energy for all times implying an explanation of the coincidence of dark matter and dark energy. In the final state, the universe becomes dark, consisting of dark matter and dark energy.

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