Bouncing Wave Packets, Ehrenfest Theorem, and Uncertainty Relation based upon a new Concept for the Momentum of a Particle in a Box

I. Albrecht, J. Herrmann, A. Mariani +2

For a particle in a box, the operator $-i{\partial }_x$ is not self-adjoint and thus does not qualify as the physical momentum. As a result, in general the Ehrenfest theorem is violat…