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The time evolution of closed quantum states is described by unitary transfor- mations: if a system is initially in state M11), then at some later
The time evolution of closed quantum states is described by unitary transfor- mations: if a system is initially in state M11), then at some later time the state is W2) : U hill) where U is an unitary Operator. Verify explicitly that Ua so (l0)+l1)l/\\/- Compute W2) : U W1)- is unitary. Let W1)
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