Constraints on the quintessence model with Yukawa interaction from Planck 2015 and weak lensing data
We consider a quintessence model with Yukawa interaction between dark energy and dark matter and constrain this model by employing the most recent cosmological data including the latest cosmic microwave background measurements from Planck 2015 and the weak gravitational lensing measurements from Kilo Degree Survey (KiDS). We find that the interaction in the dark sectors is compatible with the observations. The updated Planck data can significantly improve the constraints compared with the previous results from Planck 2013, while the KiDS data has less constraining power than Planck. The Yukawa interaction model is found to be able to moderately alleviate the discordance between KiDS and Planck as previously inferred from the standard Lambda cold dark matter model.