Dark energy from modified F(R)-scalar-Gauss-Bonnet gravity

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The modified F(R)-scalar-Gauss-Bonnet gravity is proposed as dark energy model. The reconstruction program for such theory is developed. It is explicitly demonstrated that the known classical universe expansion history (deceleration epoch, transition to acceleration and effective quintessence, phantom or cosmological constant era) may naturally occur in such unified theory for some (reconstructed) classes of scalar potentials. Gauss-Bonnet assisted dark energy is also proposed. The possibility of cosmic acceleration is studied there.
LaTeX, 8 pages, no figure, refs. added, version to appear in Physics Letters B

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High Energy Physics - Theory, Astrophysics, General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/179797

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.2520
 http://arxiv.org/abs/0704.2520
 Phys.Lett.B651:224-231,2007
 doi:10.1016/j.physletb.2007.06.029

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arXiv