Astrophysics > Cosmology and Nongalactic Astrophysics
[Submitted on 27 Jun 2013]
Title:Semi-holographic model revisited
View PDFAbstract:In a recent work Zhang, Li and Noh [Phys. Lett. B {\bf 694}, 177 (2010)]proposed a model for dark energy assuming this component strictly obeys the holographic principle. They performed a dynamical system analysis, finding a scaling solution which is helpful to solve the coincidence problem. However they need explicitly a cosmological constant. In this paper we derive an explicit analytical solution, without $\Lambda$, that shows agreement with the Supernovae data. However this solution is not physical because violate all the energy conditions.
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