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Homework Help: What happens to normalization of wavefunction when you add a perturb correction?

  1. Mar 8, 2012 #1
    1. The problem statement, all variables and given/known data

    Consider any ket. Find the perturbative correction to that ket. Then,

    |n> = |n0> + |n1>

    Here, |n0> is the ket from the unperturbed hamiltonian (who cares what it is), and |n1> is the 1st order correction.

    Do you introduce a new normalization when you add the perturbative correction? It seems the sensible thing to do.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Mar 9, 2012 #2


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    Science Advisor
    Homework Helper

    Yes, the 'sum' ket is also normalized to unity. <n|n>=1.
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