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Parameter splitting in dark energy: is dark energy the same in the background and in the cosmic structures?
2016
Journal of Cosmology and Astroparticle Physics
We perform an empirical consistency test of General Relativity/dark energy by disentangling expansion history and growth of structure constraints. We replace each late-universe parameter that describes the behavior of dark energy with two meta-parameters: one describing geometrical information in cosmological probes, and the other controlling the growth of structure. If the underlying model (a standard wCDM cosmology with General Relativity) is correct, that is under the null hypothesis, the
doi:10.1088/1475-7516/2016/02/059
fatcat:jfo6gjfgajedhh5bnwgyn53xcm