Matteo Martinelli, Stefania Pandolfi, C. J. A. P. Martins, P. E. Vielzeuf
Future measurements of the Sandage-Loeb signal will be crucial to probe the so called "redshift desert", thus providing a new tool for cosmological studies. In this paper we quantify the ability of a future measurement of the Sandage-Loeb signal by a CODEX-like spectrograph to constrain a phenomenological parametrization of dynamical dark energy, specifically by obtaining constraints on $w_0$ and $w_a$. We also demonstrate that if used alongside CMB data, the Sandage-Loeb measurements will be able to break degeneracies between expansion parameters, thus greatly improving cosmological constraints.
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http://arxiv.org/abs/1210.7166
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