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

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

2003-07-18

arxiv.org/abs/astro-ph/0307346v2

Phys.Rev.D70:041301,2004

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1038/431519b

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).

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