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Matrix Element 
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#1
Mar610, 01:55 PM

P: 779

Does anyone know what the formula is for the following:
<j m  S^2_{+} j m > = ? Reference to equations in Sakurai would be helpful in deriving the relation. I would suspect 3.5.37 but what about the delta_j j' ? Does anyone know what I'm talking about? 


#2
Mar610, 06:23 PM

P: 779

3.5.35 a
<j',mJ^2 j,m> = j(j+1)hbar^2 delta_j j' delta m m' 3.5.37 is J_+ j,m> = c_jm^+ j,m+1> 


#3
Mar610, 08:57 PM

Sci Advisor
P: 2,655

These appear to be formulas for finding the spin, and or angular momentum, of a wavefunction. What is your question exactly?



#4
Mar610, 09:38 PM

P: 779

Matrix Element
nevermind.



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