In dark matter-dark energy coupling models, the Kaiser formula gains a coupling-dependent term, so redshift-space distortions measure an effective growth rate that differs from the true matter growth rate, with Euclid and SKA2 forecasts.
In the uncoupled case, the equation of state of the scalar field follows the behavior of the dominant background fluid according 12 (a) (b) FIG
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Redshift space distortions in the presence of non-minimally coupled dark matter
In dark matter-dark energy coupling models, the Kaiser formula gains a coupling-dependent term, so redshift-space distortions measure an effective growth rate that differs from the true matter growth rate, with Euclid and SKA2 forecasts.