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Regular PapersNo Access

VANISHING COSMOLOGICAL CONSTANT IN MODIFIED GAUSS–BONNET GRAVITY WITH CONFORMAL ANOMALY

Department of Energy and Process Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway

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and

Department of Physics, Universidad Tecnológica de Pereira, Colombia

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https://doi.org/10.1142/S0218271807010419Cited by:15 (Source: Crossref)

Abstract

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.

Keywords:

PACS: 98.80.Hw, 04.50.+h, 11.10.Kk, 11.10.Wx

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Received 2 October 2006

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