I What is the significance of recoupling in spin network theories?

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Heidi
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Hi Pfs
My question is not technical. I found papers about recoupling theories about spin networks.
i see what they are about but why this word "recoupling"?
Was there before a decoupling and recoupling whar?
 
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Would you please cite the papers? Makes me curious!
 
Heidi said:
I found papers
Which papers? Please give specific references.
 

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