Holographic interacting dark energy in the braneworld cosmology

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dc.creatorKim, Kyoung Yee
dc.creatorLee, Hyung Won
dc.creatorMyung, Yun Soo
dc.date2007-06-16
dc.date.accessioned2026-07-07T11:16:56Z
dc.date.available2026-07-07T11:16:56Z
dc.descriptionWe investigate a model of brane cosmology to find a unified description of the radiation-matter-dark energy universe. It is of the interacting holographic dark energy with a bulk-holographic matter $χ$. This is a five-dimensional cold dark matter, which plays a role of radiation on the brane. Using the effective equations of state $ω^{\rm eff}_{\rm Λ}$ instead of the native equations of state $ω_{\rm Λ}$, we show that this model cannot accommodate any transition from the dark energy with $ω^{\rm eff}_{\rm Λ}\ge-1$ to the phantom regime $ω^{\rm eff}_{\rm Λ}<-1$. Furthermore, the case of interaction between cold dark matter and five dimensional cold dark matter is considered for completeness. Here we find that the redshift of matter-radiation equality $z_{\rm eq}$ is the same order as $z^{\rm ob}_{\rm eq}=2.4\times10^{4} Ω_{\rm m}h^2$. Finally, we obtain a general decay rate $Γ$ which is suitable for describing all interactions including the interaction between holographic dark energy and cold dark matter.
dc.description17 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0706.2444
dc.identifierhttp://arxiv.org/abs/0706.2444
dc.identifierMod.Phys.Lett.A22:2631-2645,2007
dc.identifierdoi:10.1142/S0217732307025765
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192840
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleHolographic interacting dark energy in the braneworld cosmology
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