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Cosmological observations in scalar-tensor quintessence

Alain Riazuelo·Jean-Philippe Uzan
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Abstract

The framework for considering the astronomical and cosmological observations in the context of scalar-tensor quintessence in which the quintessence field also accounts for a time dependence of the gravitational constant is developed. The constraints arising from nucleosynthesis, the variation of the constant, and the post-Newtonian measurements are taken into account. A simple model of supernovae is presented in order to extract the dependence of their light curves with the gravitational constant; this implies a correction when fitting the luminosity distance. The properties of perturbations as well as CMB anisotropies are also investigated.

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Alain Riazuelo, Jean-Philippe Uzan. 2002-06-25. Cosmological observations in scalar-tensor quintessence. https://doi.org/10.1103/physrevd.66.023525

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