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In case that two indential particals can be written as Phi_1(r,t)=a_1|alpha>+b_1|beta>; Phi_2(r,t)=a_2|alpha>+b_2|beta>; then S= If Phi_1=exp(-i(\omega t - k r))|alpha> Phi_2=exp(-i(\omega t - k r))|beta>; |alpha>, |beta> are degenerate wavefunctions, S is independent on the time, it is always equal to ZERO. ÔõôÀí½â£¿ |
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8Â¥2008-08-18 16:43:50
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