 ![a) The plot of $\omega_{\phi}$ in terms of $z$ and for some values of the parameters $\lambda$ and $n$. There is not any phantom behavior in these cases. b) The plot of $\omega_{\phi}$ for the redshift $z=0.00$. Even though in a small region $\omega_{\phi}$ takes negative values, it does not however cross the PDL. ](fig0