Particles in an energy eigenstate not moving?

[sheelbe999]

I'm really struggling with this one guys, the question is:

Explain why a particle which is in an energy eigenstate cannot be moving in the
classical sense.

 

[Fredrik]

What you need to know to answer this is a) the interpretation of a wavefunction, and b) how a wavefunction changes with time. (If you know that the state at t=0 is f, then what is it at arbitrary t? f(t)=(something)f, right?).

(This should probably be in the homework forum).

 

[sheelbe999]

thanks and will move it

henry

 

[Matterwave]

Hints: This has to do with "stationary states".

What is a prerequisite for a stationary state? What do stationary states imply for expectation values?