Ghost Dark Energy with Non-Linear Interaction Term

Here we investigate ghost dark energy (GDE) in the presence of a non-linear interaction term between dark matter and dark energy. To this end we take into account a general form for the interaction term. Then we discuss about different features of three choices of the non-linear interacting GDE. In all cases we obtain equation of state parameter, w (D) = p/rho, the deceleration parameter and evolution equation of the dark energy density parameter (Omega (D) ). We find that in one case, w (D) cross the phantom line (w (D) < -1). However in two other classes w (D) can not cross the phantom divide. The coincidence problem can be solved in these models completely and there exist good agreement between the models and observational values of w (D) , q. We study squared sound speed , and find that for one case of non-linear interaction term can achieves positive values at late time of evolution.