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Homework Help: Hydrogen atom state expansion

  1. Sep 10, 2015 #1
    1. The problem statement, all variables and given/known data

    Consider a hydrogen atom which, in t = 0, is in the state given by


    Expand ψ in terms of the nlm} basis of normalized eigenfunctions


    2. Relevant equations

    The result should be


    3. The attempt at a solution

    Apart from having the supposed solution, I have no idea where to start.
    Any help is appreciated.
  2. jcsd
  3. Sep 10, 2015 #2


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    You are required to show any of your initial effort before others can help you.
  4. Sep 10, 2015 #3


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    Do you understand the general principle of writing a state as a linear combination of orthonormal basis states? And how, in general, to determine the coefficients?
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