Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-02-24
Phys.Lett. B636 (2006) 75-79
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Ordinary LaTex, 8 pages
Scientific paper
10.1016/j.physletb.2006.02.069
By incorporating the holographic principle in a time-depending Lambda-term cosmology, new physical bounds on the arbitrary parameters of the model can be obtained. Considering then the dark energy as a purely geometric entity, for which no equation of state has to be introduced, it is shown that the resulting range of allowed values for the parameters may explain both the coincidence problem and the universe accelerated expansion, without resorting to any kind of additional structures.
Beltran Almeida Juan P.
Pereira J. G.
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