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In this work we consider a scenario where the dark energy is a dynamicalfluid whose energy density can be transferred to the dark matter via a couplingfunction proportional to the energy density of the dark energy. In particular,we investigate this model's ability to address the $S_8$ tension and find thatagainst data from Planck, BAO and Pantheon the model 1) can significantlyreduce the significance of the tension, 2) does so without exacerbating norintroducing any other tension (such as the $H_0$ tension) and 3) withoutworsening the fit to the considered data sets with respect to the $\Lambda$CDMmodel. We also test the model against data from weak lensing surveys such asKiDS and DES, and find that the model's ability to address the $S_8$ tensionfurther improves, without a significant impact on any other parameter norstatistical measure.

Dark energy-dark matter interactions as a solution to the $S_8$ tension