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IfU=Exp[-iHt/h] is the evolution operator, and H the hamiltonian one,

i cant figure out how to derive the following equation.

Let`s call |E> an eigenstate ofH, E it`s eigenvalue and |J> a random basis.

Then:

<J|U|E>=Exp[-iEt/h]*<J|E>.

??

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# Homework Help: Evolution Operator

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