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Unformatted text preview: . Check that the matrix you constructed satises all the properties of density matrices. d) Compute the average e) Repeat parts (a) and (d) for the operator 2. a) (4.2.2) Show that for a real wave function , the expectation value of momentum vanishes, that is: . (Hint: show that the probabilities for the momenta are equal.) Generalize this result to the case where is real and c an arbitrary (real or complex) constant. b) (4.2.3) Show that if has mean momentum , then has mean momentum ....
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 Fall '09
 valenc
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