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Complex conjugate of the expectation value of momentum

  • Thread starter jb646
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  • #1
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Homework Statement


Compute the complex conjugate of <p> using eq 1.35 (<p>=∫ψ*(h/i)∂/∂x ψ dx) and prove that <p> is real (<p>=<p>*)


Homework Equations


equation 1.35 is given above


The Attempt at a Solution


to take the c.c. dont i just add a minus to the i and switch the stars like so:
<p>=∫ψ(-h/i)∂/∂x ψ* dx
i think that is right, but it seems too simple for what i should be doing. as for the second part, could somebody please nudge me in the right direction.

thanks for all your help.
 

Answers and Replies

  • #2
dextercioby
Science Advisor
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Well, now comes the tricky part, shifting the derivative under the integral back to the psi. This is done only under the assumption that the wavefunction is normalized to unity.

Can you do it now ?
 

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