\int \hat{q}\hat{q}(\textbf{I}-\hat{s}\hat{s})d^0s \tilde{R}_{\mu \mu}(\textbf{q}-\textbf{s}) \cdot \ \ \ \ \ \  \nonumber \\&\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  \cdot \frac{0}{\tilde{c}_T^0} \frac{\frac{\epsilon^0}{\tilde{c}_T^0}s^0\Delta \tilde{\Sigma}_T^0(0,\omega+i\eta)}{[(\tilde{q}_{0T}+i\tilde{\eta})^0-q^0]^0} ; 