Semi-Holographic Universe
arXiv:1010.1362 · doi:10.1016/j.physletb.2010.09.039
Abstract
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.
10 pages, 3 figs, comments are welcome
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- Exploring the Dark Universe: constraints on dynamical Dark Energy models from CMB, BAO and growth rate measurements
- A magnified glance into the dark sector: probing cosmological models with strong lensing in A1689
- Interacting cosmic fluids and phase transitions under a holographic modeling for dark energy
- Bulk-Boundary interaction and the second law in Hořava-Lifshitz cosmology
- Gauss-Bonnet dark energy on Hořava-Lifshitz cosmology
- Towards a sound massive cosmology
- Semi-holographic model revisited
- Generalized Semi-Holographic Universe