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Article Dans Une Revue Journal of Physics A: Mathematical and Theoretical Année : 2007

Scalar-field quintessence by cosmic shear: CFHT data analysis and forecasts for DUNE

C. Schimd
  • Fonction : Auteur

Résumé

A light scalar field, minimally or not-minimally coupled to the metric field, is a well-defined candidate for the dark energy, alleviating the fine-tuning problem intrinsic to the cosmological constant and avoiding the difficulties of parameterizations. We present a general description of the weak gravitational lensing valid for every metric theory of gravity, including vector and tensor perturbations for a non-flat spatial metric. Based on this description, we investigate two minimally coupled scalar-field quintessence models using VIRMOS-Descart and CFHTLS cosmic-shear data, and forecast the constraints for the proposed space-borne wide-field imager DUNE.

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Dates et versions

hal-03646595 , version 1 (19-04-2022)

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Citer

C. Schimd, I. Tereno. Scalar-field quintessence by cosmic shear: CFHT data analysis and forecasts for DUNE. Journal of Physics A: Mathematical and Theoretical, 2007, 40, pp.7105-7112. ⟨10.1088/1751-8113/40/25/S69⟩. ⟨hal-03646595⟩
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