for a degnerate system it's in my notes that you can write:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]H^{(0)}\Psi _{1}=E_{0}\Psi _{1}[/tex]

[tex]H^{(0)}\Psi _{2}=E_{0}\Psi _{2}[/tex]

and (not related) we write the general Schrodinger equation

[tex]H_{0}\Psi + V\Psi = E\Psi [/tex]

Please could someone tell me what both the upper and lower zeros on the H mean?

Thanks in advance

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# Quick question on notation of the Hamiltonian

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