Cosmological dynamics of a bulk scalar field in the DGP setup

Nozari, Kourosh; Rashidi, Narges

doi:10.1007/s10509-011-0945-x

Cited by 2 publications

(1 citation statement)

References 101 publications

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“…One of the particular forms of bulk matter is a scalar field [13]. We have studied with details the cosmological dynamics of minimally coupled bulk scalar field in the DGP setup recently [14,15]. But, since scalar field can interact with other fields such as the gravitational sector of the theory, in the spirit of braneworld scalar-tensor theories, we can consider a non-minimal coupling (NMC) of the scalar field with intrinsic (Ricci) curvature induced on the brane.…”

Section: Introductionmentioning

confidence: 99%

Cosmological dynamics of a non-minimally coupled bulk scalar field in DGP setup

Nozari

Rashidi²

2013

Astrophys Space Sci

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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. 98.80.Cq, 95.36.+x, 04.65.+e

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Section: Introductionmentioning

confidence: 99%