Braneworld models with a non-minimally coupled phantom bulk field: a simple way to obtain the -1-crossing at late times

Abstract

We investigate general braneworld models, with a non-minimally coupled phantom bulk field and arbitrary brane and bulk matter contents. We show that the effective dark energy of the brane-universe acquires a dynamical nature, as a result of the non-minimal coupling which provides a mechanism for an indirect "bulk-brane interaction" through gravity. For late-time cosmological evolution and without resorting to special ansatzes or to specific areas of the parameter space, we show that the -1-crossing of its equation-of-state parameter is general and can be easily achieved. As an example we provide a simple, but sufficiently general, approximate analytical solution, that presents the crossing behavior.

11 pages, 2 figures

References in corpus (18)

• Cosmological Evolution of a Quintom Model of Dark Energy
• Can dark energy evolve to the Phantom?
• The holographic dark energy in non-flat Brans-Dicke cosmology
• Interacting Holographic Phantom
• Restoring Holographic Dark Energy in Brane Cosmology
• Holographic Dark Energy in Braneworld Models with a Gauss-Bonnet Term in the Bulk. Interacting Behavior and the w =-1 Crossing
• Coupled oscillators as models of quintom dark energy
• Correspondence between Holographic and Gauss-Bonnet dark energy models
• Shape invariance method for quintom model in the bent brane background
• Holographic Dark Energy in Braneworld Models with Moving Branes and the w=-1 Crossing
• Extended Quintessence with non-minimally coupled phantom scalar field
• Cyclic Universes from General Collisionless Braneworld Models
• Coupling constant constraints in a nonminimally coupled phantom cosmology
• Brane Cosmological Evolution With Bulk Matter
• DGP Cosmology with a Non-Minimally Coupled Scalar Field on the Brane
• Dark energy from bulk matter
• Brane Cosmology with a Non-Minimally Coupled Bulk-Scalar Field
• Exact Solutions in 5-D Brane Models With Scalar Fields

Cited by in corpus (3)

• Unified dark energy thermodynamics: varying w and the -1-crossing
• Non-minimal quintessence and phantom with nearly flat potentials
• Modified GBIG Scenario as an Alternative for Dark Energy