Holographic modified gravity

Details Holographic modified gravity Holographic modified gravity

2009-01-21

arxiv.org/abs/0901.3252v1

Int.J.Mod.Phys.D17:2219-2228,2008

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, no gigure

Scientific paper

10.1142/S0218271808013819

In this paper we study cosmological application of holographic dark energy density in the modified gravity framework. We employ the holographic model of dark energy to obtain the equation of state for the holographic energy density in spatially flat universe. Our calculation show, taking $\Omega_{\Lambda}=0.73$ for the present time, it is possible to have $w_{\rm \Lambda}$ crossing -1. This implies that one can generate phantom-like equation of state from a holographic dark energy model in flat universe in the modified gravity cosmology framework. Also we develop a reconstruction scheme for the modified gravity with $f(R)$ action.

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