Cosmological dynamics of a non-minimally coupled bulk scalar field in DGP setup |
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| Authors: | Kourosh Nozari Narges Rashidi |
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| Institution: | 1. Department of Physics, Islamic Azad University, Sari Branch, Sari, Iran
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| Abstract: | We consider cosmological dynamics of a canonical bulk scalar field, which is coupled non-minimally to 5-dimensional Ricci scalar in a DGP setup. We show that presence of this non-minimally coupled bulk scalar field affects the jump conditions of the original DGP model significantly. Within a superpotential approach, we perform some numerical analysis of the model parameter space and consider bulk-brane energy exchange in this setup. Also we show that the normal, ghost-free branch of the DGP solutions in this case has the potential to realize a self-consistent phantom-like behavior and therefore explains late time acceleration of the universe in a consistent way. |
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