The holographic dark energy in non-flat Brans–Dicke cosmology

By M. Setare. 2006

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Abstract In this Letter we study cosmological application of holographic dark energy density in the Brans–Dicke framework. We employ the holographic model of dark energy to obtain the equation of state for the holographic energy density in non-flat (closed) universe enclosed by the event horizon measured from the sphere of horizon named L. Our calculation shows, taking Ω Λ = 0.73 for the present time, the lower bound of w Λ is −0.9. Therefore it is impossible to have w Λ crossing −1. This implies that one cannot generate phantom-like equation of state from a holographic dark energy model in non-flat universe in the Brans–Dicke cosmology framework. On the other hand, we suggest a correspondence between the holographic dark energy scenario in flat universe and the phantom dark energy model in framework of Brans–Dicke theory with potential.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1e6fb18082a0a0c69be43d48380a8e8c9afd976a

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In Astronomy and Astrophysics

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Citations in the corpus

Holographic dark energy (2016, methodology): “The Brans-Dicke theory in the framework of HDE is studied in [334, 335, 336, 337].”