 $$\begin{array}{l} {\mathcal{A}} (\phi^{\nu ..}, \overline{\phi^{\nu ..}}\,) := {\ds \sum\limits_{n^0=N_0^0}^{N_0^0} \sum\limits_{n^0=N_0^0}^{N_0^0} \sum\limits_{n^0=N_0^0}^{N_0^0}\, \int\limits_{t_0}^{t_0} } \\[0.0cm] L\Big({{\mathbf{n}}},t; 