2.6

文档摘要

2.6 2.6 “”“”“”“”—— ——Unitary Transformation $$ i\hbar \frac{d}{dt}|\psi(t)\rangle = H(t)|\psi(t)\rangle $$ $ H(t) $ $ |\psi(t)\rangle $ $$ \psi(t)\rangle = U(t, t0)|\psi(t0)\rangle $$ $ U(t, t0) $ $ U^\dagger U = I $ $ \det(U) = e^{i\theta} $1$ \langle\psi(t)|\psi(t)\rangle = \langle\psi(t0)|\psi(t0)\rangle $ $ G $ $$ G^\dagger G = I $$ “”“” $ 1