Expectation Values for a Particle on a Ring Handout

  • Central Forces 2021

    Consider the following normalized abstract quantum state on a ring: \begin{equation} \left|{\Phi}\right\rangle =\sqrt{\frac{2}{3}}\left|{-3}\right\rangle +\frac{1}{\sqrt{6}}\left|{-1}\right\rangle +\frac{i}{\sqrt{6}}\left|{3}\right\rangle \end{equation}

    1. What is the expectation value of \(\hat{L}_z\) as a function of time for this state?
    2. What is the expectation value of the energy as a function of time for this state?