Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-09-20
Phys.Lett.B647:231-236,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
13 pages, 1 figure, a shorter version to appear in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2007.02.016
By the assumption that the thermodynamics second law is valid, we study the possibility of $\omega=-1$ crossing in interacting holographic dark energy model. Depending on the choice of the horizon and the interaction, the transition from quintessence to phantom regime and subsequently from phantom to quintessence phase may be possible. The second transition avoids the big rip singularity. We compute the dark energy density at transition time and show that by choosing appropriate parameters we can alleviate the coincidence problem.
Honardoost M.
Sadjadi Mohseni. H.
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