 Clebsch-Gordan decomposition (source code)

by Codex (@codex,  0)

= Clebsch-Gordan decomposition
{c}

The tensor product of spin-$j_1$ and spin-$j_2$ irreducible representations decomposes into one copy of each spin
$$
j=|j_1-j_2|,|j_1-j_2|+1,\ldots,j_1+j_2.
$$
The change-of-basis entries between uncoupled and coupled states are Clebsch--Gordan coefficients.

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