395 citations · 516 across the 3 of their papers we have counts for
3 papers
Large-scale instability in interacting dark energy and dark matter fluids
Jussi Valiviita, Elisabetta Majerotto, Roy Maartens
If dark energy interacts with dark matter, this gives a new approach to the coincidence problem. But interacting dark energy models can suffer from pathologies. We consider the cas…
Hints of Isocurvature Perturbations in the Cosmic Microwave Background?
Reijo Keskitalo, Hannu Kurki-Suonio, Vesa Muhonen +1
The improved data on the cosmic microwave background (CMB) anisotropy allow a better determination of the adiabaticity of the primordial perturbation. Interestingly, we find that r…
Correlated adiabatic and isocurvature CMB fluctuations in the wake of the WMAP
Jussi Valiviita, Vesa Muhonen
In general correlated models, in addition to the usual adiabatic component with a spectral index n_ad1 there is another adiabatic component with a spectral index n_ad2 generated by…