Semi-Holographic Universe

Details Semi-Holographic Universe Semi-Holographic Universe

2010-10-07

arxiv.org/abs/1010.1362v1

Phys.Lett.B694:177-180,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 3 figs, comments are welcome

Scientific paper

10.1016/j.physletb.2010.09.039

By assuming that a dark component (dark energy) in the universe strictly obeys the holographic principle, that is, its entropy is one fourth of the apparent horizon, we find that the existence of the other dark component (dark matter) is compulsory, as a compensation of dark energy, based on the first law of thermodynamics. By using the method of dynamical system analysis, we find that there exists a stable dark energy-dark matter scaling solution at late time, which is helpful to solve the coincidence problem. For reasonable parameters, the deceleration parameter is well consistent with current observations.

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