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Exercise 4.2.2.* Show that for a real wave function y(x), the expectation value of momentum (P)=0. (Hint: Show that the probabilities for the momenta ±p are equal.) Generalize this result to the case y=cy,, where y, is real and c an arbitrary (real or complex) constant. (Recall that y) and aly) are physically equivalent.)

Exercise 4.2.2.* Show that for a real wave function y(x), the expectation value of momentum (P)=0. (Hint: Show that the probabilities for the momenta ±p are equal.) Generalize this result to the case y=cy,, where y, is real and c an arbitrary (real or complex) constant. (Recall that y) and aly) are physically equivalent.)

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Exercise 4.2.2.* Show that for a real wave function y(x), the expectation value of momentum (P)=0. (Hint: Show that the probabilities for the momenta ±p are equal.) Generalize this result to the case y=cy,, where y, is real and c an arbitrary (real or complex) constant. (Recall that y) and a|y) are physically equivalent.)
Transcribed Image Text:Exercise 4.2.2.* Show that for a real wave function y(x), the expectation value of momentum (P)=0. (Hint: Show that the probabilities for the momenta ±p are equal.) Generalize this result to the case y=cy,, where y, is real and c an arbitrary (real or complex) constant. (Recall that y) and a|y) are physically equivalent.)
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