Decaying Lambda cosmology with varying G

Details Decaying Lambda cosmology with varying G Decaying Lambda cosmology with varying G

2003-07-29

arxiv.org/abs/gr-qc/0307114v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Work presented at the Tenth Marcel Grossmann Meeting on General Relativity, Rio de Janeiro, July 20-26, 2003

Scientific paper

We study a uniform and isotropic cosmology with a decaying vacuum energy density, in the realm of a model with a time varying gravitational "constant". We show that, for late times, such a cosmology is in accordance with the observed values of the cosmological parameters. In particular, we can obtain the observed ratio between the matter density and the total energy density, with no necessity of any fine tuning.

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