In what follows, we obtain some numerical values of the polarization coefficient $R_p^{nr(ur)}$ which will be useful to compare the polarization force so obtained with the electrostatic force. In fact, it represents the ratio of the polarization force and the electrostatic force, i.e., $R_p^{nr(ur)}=F_p^{nr(ur)}/F_E$, where $F_E$ stands for the electrostatic force. For typical astrophysical parameters with $n_{e0}=2\times10^{27}$ cm$^{-3}$, $n_{d0}=1.9\times10^{21}$ cm$^{-3}$, $Z_d=10^3$, $T_{\rm Fe}=10^7$ K and $T_i=10^5$ K, the polarization coefficient is obtained as $R_p^{nr}=0.133$. Also, for typical laboratory parameters (e.g., in metals) satisfying the non-relativistic degenerate conditions, viz., $n_{e0}=10^{22}$ cm$^{-3}$, $T_e=10^4$ K, and $T_i=300$ K, the polarization coefficient is $R_p^{nr}=0.036$. Furthermore, for typical values of $n_{e0}=10^{36}$ cm$^{-3}$, $T_e=10^{10}$ K, and $T_i=10^7$ K, and satisfying both the ultra-relativistic and degenerate conditions (viz., $s_e\gg1$ and $\chi_e>1$), the polarization coefficient is $R_p^{nr}=0.158$.On the other hand, for typical complex plasma parameters
[3] with $a\sim1$ $\mu$m, $Q=10^3e$, $\lambda_D\sim10^{-2}$ cm, and $T_i=0.03$ eV, we have the polarization coefficient in classical complex plasmas, $R_p^{\rm{classical}}=0.12$. Thus, it follows that the polarization force in degenerate dense plasmas becomes higher in magnitude than that in classical plasmas, and should play vital roles on the linear DA modes as well as nonlinear evolution of DA waves in dense plasmas.