The model-independent degeneracy-breaking point in cosmological models with interacting Dark Energy and Dark Matter

Abstract

Abstract We study cosmological models with interaction between dark energy (DE) and dark matter (DM). For the interaction term Q in cosmic evolution equations, there is a model-independent degeneracy-breaking (D-B) point when $$Q_{1}$$ Q1 (a part of Q) equals to zero, where the interaction can be probed without degeneracy between the constant DE equation of state (EoS).