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## Main Question or Discussion Point

Hi, i am evaluating the integral [itex]\int_{-\infty}^{+\infty}dE \langle p'|E \rangle \langle E| e^{-iEt/ \hbar} |p\rangle[/itex]

However, i am unsure how to evaluate [itex]\langle E| e^{-iEt/ \hbar} |p\rangle[/itex] . I am not sure if it is simply [itex]e^{-iEt/ \hbar}[/itex] [itex]\times[/itex] [itex]\langle E|p\rangle[/itex] or something else. Any advice would help. Thank you

However, i am unsure how to evaluate [itex]\langle E| e^{-iEt/ \hbar} |p\rangle[/itex] . I am not sure if it is simply [itex]e^{-iEt/ \hbar}[/itex] [itex]\times[/itex] [itex]\langle E|p\rangle[/itex] or something else. Any advice would help. Thank you