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Brane-bulk energy exchange : a model with the present universe as a global attractor

G. Kofinas·G. Panotopoulos·T. N. Tomaras
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Abstract

The role of brane-bulk energy exchange and of an induced gravity term on a single braneworld of negative tension and vanishing effective cosmological constant is studied. It is shown that for the physically interesting cases of dust and radiation a unique global attractor which can realize our present universe (accelerating and 0<Omega_{m0}<1) exists for a wide range of the parameters of the model. For Omega_{m0}=0.3, independently of the other parameters, the model predicts that the equation of state for the dark energy today is w_{DE,0}=-1.4, while Omega_{m0}=0.03 leads to w_{DE,0}=-1.03. In addition, during its evolution, w_{DE} crosses the w_{DE}=-1 line to smaller values.

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G. Kofinas, G. Panotopoulos, T. N. Tomaras. 2006-01-16. Brane-bulk energy exchange : a model with the present universe as a global attractor. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F107

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