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

2006/10/10 by Iver Brevik, IVER BREVIK, John Quiroga Hurtado +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Conformal anomaly #Conformal gravity #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #De Sitter universe #General relativity #Particle physics theoretical and experimental studies #Quantum cosmology #Quantum gravity #Vacuum energy #gr-qc

paper · pdf · doi:10.1142/s0218271807010419

published as Int.J.Mod.Phys.D16:817-826,2007 · 8 pages latex, 1 figure. To appear in Int. J. Mod. Phys. D

arxiv created 2006/10/10 · openalex publication_date 2007/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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.

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