Phantom-like behavior of a DGP-inspired Scalar-Gauss-Bonnet gravity

Journal Article · Thu Oct 01 00:00:00 EDT 2009 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2009/10/022· OSTI ID:22273073

Nozari, Kourosh; Azizi, Tahereh ^[1]

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1. Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar (Iran, Islamic Republic of)

We study the phantom-like behavior of a DGP-inspired braneworld scenario where curvature correction on the brane is taken into account. We include a possible modification of the induced gravity on the brane by incorporating higher order curvature terms of Gauss-Bonnet type. We investigate the cosmological implications of the model and we show that the normal branch of the scenario self-accelerates in this modified scenario without introducing any dark energy component. Also, a phantom-like behavior can be realized in this model without introducing any phantom field that suffers from serious difficulties such as violation of the null energy condition.

• OSTI ID: 22273073
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BRANES
CORRECTIONS
COSMOLOGICAL MODELS
GRAVITATION
MODIFICATIONS
M-THEORY
NONLUMINOUS MATTER
PHANTOMS
SCALARS