# Beginning with an arbitrary classical equation for energy, how do I get the QM Hamiltonian?

For linear momentum I can use the de Broglie equation, but what about energy in terms of moment of inertia or some other form?

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 Do you mean quantization in old quantum mechanics? – user10001 Sep 6 '12 at 20:26 I guess so. It relates to a homework problem of finding the Hamiltonian of a QM rigid rotor using the Hamiltonian of a classical rigid rotor. I wasn't sure how to do that or generalize the process. – Nick Sep 6 '12 at 22:05 Rotator is also given in above link. If you have any specific doubts regarding it you can include them in your question. – user10001 Sep 6 '12 at 22:40