Journal
ASTROPARTICLE PHYSICS
Volume 29, Issue 5, Pages 336-339Publisher
ELSEVIER
DOI: 10.1016/j.astropartphys.2008.03.002
Keywords
cosmology; dark energy
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Redshift distortion measurements from galaxy surveys include sensitivity to the gravitational growth index distinguishing other theories from Einstein gravity. This gravitational sensitivity is substantially free from uncertainty in the effective equation of state of the cosmic expansion history. We estimate the future sensitivity and complementarity of this technique exploring the growth history of the universe. We also illustrate the bias in the traditional application to matter density determination using f = Omega(m)(a)(0.6), and how to avoid it. (C) 2008 Elsevier B.V. All rights reserved.
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