Qualitative probe of interacting dark energy with redshift-space distortions

Understand

The imprint of interacting dark energy (IDE) needs to be correctly identified in order to avoid bias in constraints on IDE.

• This paper investigates the large-scale imprint of IDE in redshift space distortions, using $Euclid$-like photometric prescriptions.
• A first attempt at incorporating the IDE dynamics in the galaxy (clustering and evolution) biases is made.
• Without IDE dynamics taken into account in the galaxy biases, as is conventionally done, the results suggest that for a constant dark energy equation of state parameter, an IDE model where the dark energy transfer rate is proportional to the dark energy density exhibits an alternating, positive-negative effect in the redshift space distortions angular power spectrum.