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arXiv · 0706.2615

Constraining scalar-tensor quintessence by cosmic clocks

S. Capozziello·P. K. S. Dunsby·E. Piedipalumbo·C. Rubano
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Abstract

Scalar-tensor quintessence models can be constrained by identifying suitable cosmic clocks which allow to select confidence regions for cosmological parameters. In particular, we constrain the characterizing parameters of non-minimally coupled scalar-tensor cosmological models which admit exact solutions of the Einstein field equations. Lookback time to galaxy clusters at low intermediate, and high redshifts is considered. The high redshift time-scale problem is also discussed in order to select other cosmic clocks such as quasars.

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S. Capozziello, P. K. S. Dunsby, E. Piedipalumbo, C. Rubano. 2007-06-18. Constraining scalar-tensor quintessence by cosmic clocks. https://doi.org/10.1051/0004-6361:20077827

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