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Non changing variables in wave function.

  1. Mar 18, 2015 #1
    Hi. I would like to know which variables in the wave function are constant (in this local context) and which are not. The wave number for instance varies in the article I was reading (WKB approximation). Why is this so? What other variable in the wavefunction can vary?

    Please help me as I am young and new to this...
  2. jcsd
  3. Mar 18, 2015 #2
  4. Mar 18, 2015 #3


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    Staff: Mentor

    There are no "variables" in the wave function. You have a complex amplitude that is position dependent, and that's it.

    The WKB approximation is a semi-classical method, which attributes a classical wave number which varies with position, depending on the potential. But it is not an intrinsic value of the actual quantum wave function.
  5. Mar 23, 2015 #4
    Thanks for your reply... Maybe I phrased my sentence incorrectly. By variables I was referring to κ (Wave Number) and ω. Do these change as the wavefunction evolves?
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