Graph of phase shift $\Delta P_0$ vs  extropic non-extensive parameter $q$

<p>Graph of phase shift $\Delta P_0$ vs &nbsp;extropic non-extensive parameter $q$, &nbsp;taking rest of &nbsp;parameters as &nbsp;$\varepsilon =0.1$, $\phi _m=1$, $\alpha =3.5 $, $\mu =0.56$ and $\nu=0.44$. The upper curve for &nbsp;$\beta =0.1$ (red line), middle one for $\beta=0.5$ (green line) and lower one is $\beta= 0.95 $ (blue line).</p>