Vanishing Cosmological Constant in Modified Gauss-Bonnet Gravity with Conformal Anomaly

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We consider dark energy cosmology in a de Sitter universe filled with quantum conformal matter. Our model represents a Gauss-Bonnet model of gravity with contributions from quantum effects. To the General Relativity action an arbitrary function of the GB invariant, f(G), is added, and taking into account quantum effects from matter the cosmological constant is studied. For the considered model the conditions for a vanishing cosmological constant are considered. Creation of a de Sitter universe by quantum effects in a GB modified gravity is discussed.
8 pages latex, 1 figure. To appear in Int. J. Mod. Phys. D

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/181518

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0610044
 http://arxiv.org/abs/gr-qc/0610044
 Int.J.Mod.Phys.D16:817-826,2007
 doi:10.1142/S0218271807010419

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arXiv