Holographic Dark Energy in Braneworld Models with a Gauss-Bonnet Term in the Bulk. Interacting Behavior and the w =-1 Crossing
| dc.creator | Saridakis, E. N. | |
| dc.date | 2007-12-21 | |
| dc.date | 2008-02-19 | |
| dc.date.accessioned | 2026-07-07T11:39:39Z | |
| dc.date.available | 2026-07-07T11:39:39Z | |
| dc.description | We apply bulk holographic dark energy in general braneworld models with a Gauss-Bonnet term in the bulk and an induced gravity term and a perfect fluid on the brane. Without making any additional assumptions we extract the Friedmann equation on the physical brane and we show that a $ρ$-$ρ_Λ$ coupling arises naturally by the full 5D dynamics. The low-energy (late-time) evolution reveals that the effective 4D holographic dark energy behaves as ``quintom'', that is it crosses the phantom divide $w=-1$ during the evolution. In particular, the Gauss-Bonnet contribution decreases the present value of $w_Λ$, while it increases the growing rate of $w_Λ(z)$ with $z$, in comparison with the case where such a term is absent. | |
| dc.description | 16 pages, version published in Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/0712.3806 | |
| dc.identifier | http://arxiv.org/abs/0712.3806 | |
| dc.identifier | Phys.Lett.B661:335-341,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.02.032 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199994 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Holographic Dark Energy in Braneworld Models with a Gauss-Bonnet Term in the Bulk. Interacting Behavior and the w =-1 Crossing | |
| dc.type | text |