ΛCDM epoch reconstruction from <i>F</i> ( <i>R</i> , <i>G</i> ) and modified Gauss–Bonnet gravities

Abstract\nDark energy cosmology is considered in a modified Gauss-Bonnet model of gravity with and without a scalar field. It is shown that these generalizations of General Relativity endow it with a very rich cosmological structure: it may naturally lead to an effective cosmological constant, quint... View More