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alxm
alxm is offline
#2
Aug25-10, 02:02 PM
Sci Advisor
P: 1,867
The wave function with two identical particles interchanged can (at most) give a change of phase (multiplication by e^(-i*omega)), since it has to result in the same observables.

So the switched wave function can only differ by a constant factor, which are the eigenvalues of P.