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Homework Help: Help Understanding the answer to a Quantum Mechanic problem

  1. Dec 17, 2017 #1
    1. The problem statement, all variables and given/known data



    Screen Shot 2017-12-17 at 23.43.30.png

    The answer is as follows:


    Screen Shot 2017-12-17 at 23.44.23.png

    However they said that time t=0 so I am confused how the exponent has a t in it surely it should be zero. Thanks
     

    Attached Files:

  2. jcsd
  3. Dec 17, 2017 #2

    Charles Link

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    They are telling you in part (b) to write ## O(t) ## in terms of the "eigenstates at t=0". ## O(t) ## is not required to be at ## t=0 ##. (the eigenstates at ## t=0 ##, is what they are referring to).b ## \\ ## Additional note: In the part you labeled "Answer: Unseen" , in the 3rd line, I think those should read ## u^*_m(x) ## and ## u_n(x) ##, without any ## t ## dependence.
     
    Last edited: Dec 17, 2017
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