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arXiv · 1401.8208

New holographic reconstruction of scalar field dark energy models in the framework of chameleon Brans-Dicke cosmology

Surajit Chattopadhyay·Antonio Pasqua·Martiros Khurshudyan
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Abstract

Motivated by the work of Yang et al., \emph{Mod. Phys. Lett. A}, \textbf{26}, 191 (2011), we report a study on the New Holographic Dark Energy (NHDE) model with energy density given by $ρ_D=\frac{3ϕ^2}{4ω}(μH^2+ν\dot{H})$ in the framework of chameleon Brans-Dicke cosmology. We have studied a correspondence between the quintessence, the DBI-essence and the tachyon scalar field models with the NHDE model in the framework of chameleon Brans-Dicke cosmology. Deriving an expression of the Hubble parameter $H$ and, accordingly, $ρ_D$ in the context of chameleon Brans-Dicke chameleon cosmology, we have reconstructed the potentials and dynamics for these scalar field models. Furthermore, we have examined the stability for the obtained solutions of the crossing of the phantom divide under a quantum correction of massless conformally-invariant fields and we have seen that quantum correction could be small when the phantom crossing occurs and the obtained solutions of the phantom crossing could be stable under the quantum correction. It has also been noted that the potential increases as the matter-chameleon coupling gets stronger with the evolution of the universe.

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Surajit Chattopadhyay, Antonio Pasqua, Martiros Khurshudyan. 2014-08-31. New holographic reconstruction of scalar field dark energy models in the framework of chameleon Brans-Dicke cosmology. https://doi.org/10.1140/epjc%2Fs10052-014-3080-3

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