The transition of equation of state of effective dark energy in the DGP model with bulk contents

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dc.creatorYin, Shaoyu
dc.creatorWang, Bin
dc.creatorAbdalla, Elcio
dc.creatorLin, Chi-Yong
dc.date2007-08-07
dc.date2007-10-08
dc.date.accessioned2026-07-07T11:18:30Z
dc.date.available2026-07-07T11:18:30Z
dc.descriptionWe investigate the effect of the bulk contents in the DGP braneworld on the evolution of the universe. We find that although the pure DGP model cannot accommodate the transition of the effective equation of state of dark energy, once the bulk matter T^5_5 is considered, the modified model can realize the w_{eff} crossing -1. However this transition of the equation of state cannot be realized by just considering bulk-brane energy exchange or the GB effect while the bulk matter contribution is not included. T^5_5 plays the major role in the modified DGP model to have the w crossing -1 behavior. We show that our model can describe the super-acceleration of our universe with the equation of state of the effective dark energy and the Hubble parameter in agreement with observations.
dc.description25 pages, 11 figures, revised version, accepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0708.0992
dc.identifierhttp://arxiv.org/abs/0708.0992
dc.identifierPhys.Rev.D76:124026,2007
dc.identifierdoi:10.1103/PhysRevD.76.124026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193364
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleThe transition of equation of state of effective dark energy in the DGP model with bulk contents
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