期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2009/03/002
关键词
cosmology with extra dimensions; cosmology of theories beyond the SM; cosmological applications of theories with extra dimensions; dark energy theory
资金
- Research Institute for Astronomy and Astrophysics of Maragha
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.
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