A ket is expanded as \vert \nu \rangle = c_1\vert \nu_1\rangle+c_2\vert \nu_{2}\rangle .
A measurement results in the eigenvalue a1. Is it possible to measure the other eigenvalue a2 at a time t after the first measurement?
Could I write something like
\vert \psi(t)\rangle = e^{-i \hat H t...