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Table of Clebsch–Gordan coefficients
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This is a table of Clebsch–Gordan coefficients used for adding angular momentum values in quantum mechanics. The overall sign of the coefficients for each set of constant , , is arbitrary to some degree and has been fixed according to the Condon–Shortley and Wigner sign convention as discussed by Baird and Biedenharn.[1] Tables with the same sign convention may be found in the Particle Data Group's Review of Particle Properties[2] and in online tables.[3]
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Formulation
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The Clebsch–Gordan coefficients are the solutions to
Explicitly:
The summation is extended over all integer k for which the argument of every factorial is nonnegative.[4]
For brevity, solutions with m < 0 and j1 < j2 are omitted. They may be calculated using the simple relations
and
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Specific values
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The Clebsch–Gordan coefficients for j values less than or equal to 5/2 are given below.[5]
j2 = 0
When j2 = 0, the Clebsch–Gordan coefficients are given by .
j1 = 1/2, j2 = 1/2
j1 = 1, j2 = 1/2
j1 = 1, j2 = 1
j1 = 3/2, j2 = 1/2
j1 = 3/2, j2 = 1
j1 = 3/2, j2 = 3/2
j1 = 2, j2 = 1/2
j1 = 2, j2 = 1
j1 = 2, j2 = 3/2
j1 = 2, j2 = 2
j1 = 5/2, j2 = 1/2
j1 = 5/2, j2 = 1
j1 = 5/2, j2 = 3/2
j1 = 5/2, j2 = 2
j1 = 5/2, j2 = 5/2
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SU(N) Clebsch–Gordan coefficients
Algorithms to produce Clebsch–Gordan coefficients for higher values of and , or for the su(N) algebra instead of su(2), are known.[6] A web interface for tabulating SU(N) Clebsch–Gordan coefficients is readily available.
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