Dark Energy in Global Brane Universe

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We discuss the exact solutions of brane universes and the results indicate the Friedmann equations on the branes are modified with a new density term. Then, we assume the new term as the density of dark energy. Using Wetterich's parametrization equation of state (EOS) of dark energy, we obtain the new term varies with the red-shift z. Finally, the evolutions of the mass density parameter $Ω_2$, dark energy density parameter $Ω_x$ and deceleration parameter q_2 are studied.
8 pages,4 figures

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/193172

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0707.2825
 http://arxiv.org/abs/0707.2825
 Int.J.Mod.Phys.D16:1633-1640,2007
 doi:10.1142/S0218271807011024

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arXiv