Statefinder diagnosis and the interacting ghost model of dark energy

Understand

A new model of dark energy namely "ghost dark energy model" has recently been suggested to interpret the positive acceleration of cosmic expansion.

• The energy density of ghost dark energy is proportional to the hubble parameter.
• In this paper we perform the statefinder diagnostic tool for this model both in flat and non-flat universe.
• We discuss the dependency of the evolutionary trajectories in $s-r$ and $q-r$ planes on the interaction parameter between dark matter and dark energy as well as the spatial curvature parameter of the universe.