Formula_18483

\[w_{j k}(s)=\left\langle\Psi_{j}(s)\left|\frac{d}{d s}\right| \Psi_{k}(s)\right\rangle=\frac{\left\langle\Psi_{j}(s)\left|\frac{\partial \hat{H}}{\partial s}\right| \Psi_{k}(s)\right\rangle}{\left[\varepsilon_{k}(s)-\varepsilon_{j}(s)\right]},\]