Mathematica Spherical harmonics & Mathematica

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The discussion revolves around calculating the zz component for a quadruple tensor, specifically using the formula Q_{zz} = 3cos^2θ - 1 with r=1. The focus is on using either Maple or Mathematica for the calculation, as the user is not very experienced with these tools. There is mention of verifying the result using the Wigner-Eckhart theorem. Clarifications are made regarding terminology, with a note that "quadruple" is a misnomer and should be "quadrupole." The user expresses initial uncertainty but eventually figures out how to perform the calculations in Mathematica, utilizing spherical harmonic recursion relations to solve the integral. The discussion highlights the importance of correct terminology and the challenges faced when working with advanced mathematical concepts.
shetland
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I'm calculating the zz Component for the quadruple tensor.

Q_{zz} = 3cos^2\theta-1(r=1 in this case), and the Y_{lm}(\theta,\phi) would be l=2, m=0.

I would like to calculate the result in either maple or mathematica - I have not used either very much - I want to check the result using the wigner-eckhart theorem against this - and if anyone feels like offering input here as well, much appreciated.
 
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I don't know what your question is but, in the meantime, I think you intended to say quadrupole.
 
Tide said:
I don't know what your question is but, in the meantime, I think you intended to say quadrupole.

Yes, though even from mathworld it is spelled as I used: http://mathworld.wolfram.com/Quadruple.html

My question was lame, or showed off how ignorant I am - I am quite rusty - and realized how to do this in mathematica, and in addition sloughed through until I could use the wigner-eckhart theorem.

The integral was solved basically fiddling around with the spherical harmonic recursion relations (cosine * spherical harmonic).
 
Wolfram's "quadruple" refers to an entirely different concept.
 
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