^0 \bar{\phi}^0 \bar{\phi} {}^{,a}{}_{,a}}{000 k_{0}^0 \pi^0} + \frac{ k_{0} m^0 \kappa^0 \omega \bar{\phi}^0 \bar{\phi} {}^{,a}{}_{,a}}{00 k_{0}^0 \pi^0} \nonumber \\      && -  \frac{ \kappa^0 \lambda \omega \bar{\phi}^0 \bar{\phi} {}^{,a}{}_{,a}}{000 k_{0}^0 \pi^0} -  \frac{ k_{0} m^0 \kappa^0 \nu \omega \bar{\phi}^0 \bar{\phi} {}^{,a}{}_{,a}}{000 k_{0}^0 \pi^0} + \frac{ 