Mudança de referencial

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Representação de interação

$$ H(t) = H_0 + V(t), \qquad H_0|n\rangle = E_n|n\rangle $$

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Na base de $H_0$: $|\psi_{\tt I}(t) \rangle = \sum_n c_n(t) |n\rangle$ obtemos

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onde definimos a frequência de Bohr

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