Scaling cosmology with variable dark-energy equation of state

  title={Scaling cosmology with variable dark-energy equation of state},
  author={David R. Castro and H. Velten and W. Zimdahl},
  journal={Journal of Cosmology and Astroparticle Physics},
Interactions between dark matter and dark energy which result in a power-law behavior (with respect to the cosmic scale factor) of the ratio between the energy densities of the dark components (thus generalizing the ΛCDM model) have been considered as an attempt to alleviate the cosmic coincidence problem phenomenologically. We generalize this approach by allowing for a variable equation of state for the dark energy within the CPL-parametrization. Based on analytic solutions for the Hubble rate… Expand
8 Citations