Cosmological implications of scalar-tensor gravity theories

Details Cosmological implications of scalar-tensor gravity theories Cosmological implications of scalar-tensor gravity theories

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996grco....2....7a&link_type=abstract

Gravitation and Cosmology, vol. 2, no. 1, p. 7-10

Mathematics

Logic

Cosmology, Gravitation Theory, Light Elements, Abundance

Scientific paper

We study the cosmological implications of scalar-tensor theories compatible with solar-system experiments, binary pulsar dynamics, etc. In particular, homogeneous and isotropic cosmological models and the primordial light element production have been computed. In the framework of a particular class of theories, we succeed in predicting correct primordial light element abundances for very large baryon densities. The reason why such predictions have been possible is that the speed-up factor (the ratio between the Hubble parameter and that obtained in General Relativity) in this class of theories has a non-monotonic evolution during primordial nucleosynthesis. These theories have also important consequences on inflation and on the large-scale structure formation.

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