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Homework Help: Notation & commutation questions

  1. Aug 10, 2015 #1
    1. The problem statement, all variables and given/known data
    See uploaded file.

    2. Relevant equations
    I guess one needs to keep in mind this:

    3. The attempt at a solution
    Basically, my question is about the notation:

    1) What does the subscript "ee" stand for in H_ee? And "pq" in r_pq??
    2) Why is the hamiltonian bolded like it was a vector in the assignment??
    3) What is ##H_{LS}##?
    4) Are these operators used to describe a many-electron atom?

    Attached Files:

  2. jcsd
  3. Aug 10, 2015 #2
    By the way, don't the spin operator and orbital angular momentum operator act on seperate wavefunctions in seperate hilbert-spaces? So is it even possible to find the commutation between them?
    Last edited: Aug 10, 2015
  4. Aug 13, 2015 #3


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    Science Advisor
    Homework Helper

    All these questions except for the second can be found in the discussion preceding the questions that you posted. Where did you find those problems?
  5. Aug 13, 2015 #4
    actually there was no discussion preceding it, but no worries I found out about it. The professor told me in class what he meant.
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