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Testing Dark Energy Models through Large Scale Structure
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abstract
We explore the scalar field quintessence freezing model of dark energy with the inverse Ratra-Peebles potential. We study the cosmic expansion and the large scale structure growth rate. We use recent measurements of the growth rate and the baryon acoustic oscillation peak positions to constrain the matter density $\Omega_\mathrm{m}$ parameter and the model parameter $\alpha$ that describes the steepness of the scalar field potential. We solve jointly the equations for the background expansion and for the growth rate of matter perturbations. The obtained theoretical results are compared with the observational data. We perform the Baysian data analysis to derive constraints on the model parameters.
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Cited by 1 Pith paper
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Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters
Quasar X-ray and UV flux data are weak but consistent with BAO and H(z) data, and the joint data mildly favor closed spatial geometry and dynamical dark energy over flat LambdaCDM.
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