It is the root of quantum mechanics that Heisenberg picture and Schrödinger picture are equivalent?
In most textbooks and wikipedia, the equivalence is proved with a time-independent Hamiltonian. However, some literature uses Heisenberg equation with time-dependent Hamiltonian.
iℏdAdt = [A(t),H(t)]+iℏ∂A∂t.
So, does Heisenberg equation work with time-dependent Hamiltonian? If so, any proof?
Answer
OK, I figured it out myself. Heisenberg equation still holds for time-dependent Hamiltonians:
iℏdAdt = [A(t),H(t)]+iℏ∂A∂t.
However, now H(t) is defined as U†(t)HS(t)U(t).
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