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Homework Help: Particles in an energy eigenstate not moving?

  1. Apr 17, 2010 #1
    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.
  2. jcsd
  3. Apr 17, 2010 #2


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    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).
  4. Apr 17, 2010 #3
    thanks and will move it

  5. Apr 17, 2010 #4


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

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