- #1
meanyack
- 20
- 0
Homework Statement
Question is:
Prove the following:
Let A be a Hermitian operator that commutes with H0 and perturbation H'. If two degenerate states have distinct eigenvalues for A, then the matrix element of perturbation between them is zero!
The real problem is I don't understand problem completely.
I know if [A, H'] = 0, then it is called good states and one can find a unique wave functions for this. Can anyone help me about this?
Question is:
Prove the following:
Let A be a Hermitian operator that commutes with H0 and perturbation H'. If two degenerate states have distinct eigenvalues for A, then the matrix element of perturbation between them is zero!
The real problem is I don't understand problem completely.
I know if [A, H'] = 0, then it is called good states and one can find a unique wave functions for this. Can anyone help me about this?