Formula_22143

\[\begin{gathered}i \hbar \frac{\partial \psi}{\partial t}(t, x)=-\frac{\hbar^{2}}{2 m} \Delta \psi(t, x), \\\psi(0, x)=\psi_{0}(x), \quad x \in \mathbb{R}^{3},\end{gathered}\]