Model-independent dark energy test with sigma_8 using results from the Wilkinson Microwave Anisotropy Probe

Abstract

By combining the recent WMAP measurements of the cosmic microwave background anisotropies and the results of the recent luminosity distance measurements to type-Ia supernovae, we find that the normalization of the matter power spectrum on cluster scales, sigma_8, can be used to discriminate between dynamical models of dark energy (quintessence models) and a conventional cosmological constant model (LCDM).

5 pages, 6 figures. Additional discussion and reference, matches PRD accepted version

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• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• Perturbations of the Quintom Models of Dark Energy and the Effects on Observations
• The foundations of observing dark energy dynamics with the Wilkinson Microwave Anisotropy Probe
• The essence of quintessence and the cost of compression
• Present and future evidence for evolving dark energy
• The phenomenological approach to modeling the dark energy
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• The Alcock-Paczynski test in redshifted twenty one centimeter maps
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• Can we ever distinguish between quintessence and a cosmological constant?
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• Scaling Dark Energy
• Dynamical age of the universe as a constraint on the parametrization of dark energy equation of state
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• Dark Energy in Chains