Formula_20451

\[\begin{gathered}(\tilde{Q} \tilde{\psi})(p)=i \frac{d}{d p} \tilde{\psi}(p), \quad(\tilde{P} \tilde{\psi})(p)=p \tilde{\psi}(p), \\\tilde{\psi} \in \mathscr{P}(\mathbb{R}) .\end{gathered}\]